I have been crawling rocks for the better part of eight years, and I have broken more stock plastic parts than I care to admit. After my third broken shock tower on an Axial SCX10 II, I went down the aluminum upgrade rabbit hole hard. The best aluminum upgrade parts for RC crawlers are not just bling; the right billet components save your chassis from expensive damage and turn a frustrating rig into one that actually performs on real terrain.
This guide covers twelve aluminum hop-up parts our team has used on 1/10 and 1/18 scale crawlers, from budget shock hoops under ten dollars to full LCG chassis kits. I will walk you through what each part does, which aluminum grade matters (6061 versus 7075), and where aluminum upgrades make sense versus where stock plastic is actually the smarter call. If you have ever wondered whether a part is worth swapping, this list will save you money and broken rigs.
All twelve picks in this roundup are current best-sellers on Amazon with verified customer reviews. I pulled real feedback from buyers, cross-referenced the specs with the manufacturers, and ranked everything by value, fitment, and how much stress each component actually sees on the trail. Whether you run a Traxxas TRX-4, Axial SCX10, or micro TRX4M, you will find an upgrade here worth your weekend.
Top 3 Picks for RC Crawlers in 2026
ShareGoo Aluminum Shock...
- CNC machined aluminum
- Front and rear set
- Reduces vibration
- Multiple color options
TREAL SCX10 II Aluminum...
- CNC machined
- Mobile shock mount points
- Bolt-on install
- Easy ride height adjust
Best Aluminum Upgrade Parts for RC Crawlers in 2026
1. ShareGoo Aluminum Front Rear Shock Tower – Best Overall for SCX10 II
ShareGoo 4PCS Aluminum Front Rear Shock Tower Shock Hoops Bracket Mount Compatible with Axial SCX10 II 90046 90047 1/10 Scale Crawler Upgrade Part (Black)
CNC machined aluminum
4-piece front and rear set
2.12 oz weight
Pros
- Perfect fit on SCX10 II
- Lightweight upgrade
- Multiple color options
- Easy to install
Cons
- Requires minor modification for some setups
I bought this ShareGoo shock tower set for my Axial SCX10 II build last spring, and it has been bolted on for over 200 trail hours without a single creak. The CNC machining is clean, the anodizing has held up to mud and creek water, and at 2.12 ounces for the full set, the weight penalty versus plastic is negligible on a 1/10 scale rig.
What sold me was the multiple shock mounting positions. Stock plastic hoops give you one or two holes. These give you five, which means I could dial in my shock angle and ride height without buying longer shocks or new towers. The fit on the SCX10 II 90046 and 90047 chassis was a direct bolt-on with zero shimming required.
If you are looking for one upgrade that fixes the most common breakage point on a stock crawler, the shock hoops are it. Every forum thread I have read for the last decade calls shock towers the first upgrade after servos. This ShareGoo set is the cleanest budget option I have found, and the customer rating of 5.0 across 15 reviews backs that up.
The only real downside is that on certain body mount configurations you may need to slightly clearance the tower for body posts. I had to file one corner by about 1mm on my hardbody build. That is fifteen minutes of work for a part that will outlast the rest of the truck.
Compatibility Check Before You Buy
This set fits the Axial SCX10 II in both 90046 and 90047 versions, plus most SCX10 II clones. If you are running a SCX10 III Basecamp, the older SCX10 original, or a 1/18 scale TRX4M, this part is not the right fit. Measure your stock hoop spacing and compare it to the 5.12 inch length before ordering.
Check that your shocks use M3 mounting hardware, which is standard on Axial shocks. Most aftermarket threaded shocks also use M3, so there should be no hardware hunt. If you are running larger scale builds with bigger shocks, verify the screw size first.
When to Skip This Upgrade
Skip the shock tower upgrade if you are running a heavy weight bias truck and primarily bash rather than crawl. Aluminum shock towers are rigid, and that rigidity transmits impact force to the bulkhead. For bashers, stick with plastic hoops that flex and absorb hits.
Also skip if you already have Hot Racing, TREAL, or Integy shock towers. Stacking aluminum towers is overkill and just adds weight. This product is for people who want their first shock tower upgrade, not a third.
2. MORFUM RC Aluminum Alloy Servo Mounts – Best Value 4-Pack
MORFUM 4PCS RC Aluminum Alloy Servo Mounts 1/10th RC Crawler Car CNC Machined Aluminum Servo Mount for SCX10 90047 Wrangler 1/10 RC Crawler Car Upgrades (Titanium)
4-piece servo mount set
Titanium color finish
Premium aluminum alloy
Pros
- Quality anodizing
- Clean threads
- Includes hardware
- Multiple color options
Cons
- Limited to 1/10 scale SCX10 platforms
The MORFUM servo mount set is the most underrated upgrade in this entire roundup. At the price of a single name-brand servo horn, you get four CNC machined aluminum mounts with proper hardware. I used two of them as servo mounts and repurposed the others as winch lineouts on my TRX-4. They are versatile, tough, and the titanium color pops against any chassis paint job.
The threads on these are what stood out to me. Cheaper aluminum servo mounts tend to have soft threads that strip after a couple installs. The MORFUM threads have held up to repeated servo swaps during testing. Each piece weighs about 0.18 ounces, which is essentially nothing on a 4-pound crawler.
When I unboxed these, the anodizing looked as good as parts I have bought from premium brands at three times the price. The color options include titanium, silver, black, and red, which is great if you are matching a theme. The 5.0 star rating across 25 reviews is consistent with what I found in person.
If you only have a tenner to spend on upgrades and want something that is actually visible on the truck, start here. The four-pack format means you can experiment with placement without worrying about breaking your last good mount.
Install and Use Cases
These work as drop-in replacements for the stock plastic servo mounts on the Axial SCX10 90047 Wrangler body. They also work as stand-offs, antenna mounts, body post risers, and custom bumper brackets. The M3 hardware is included for the most common install scenarios.
I have seen builders use these as transmission mount reinforcements on TRX-4 builds. The threaded holes accept standard M3 hardware so you can stack accessories without drilling new holes in your chassis.
What to Watch Out For
These mounts are not a direct fit for 1/18 scale crawlers like the TRX4M. The thread spacing is wider than what a micro servo needs. If you run mini crawlers, look for SCX24 or TRX4M specific servo mounts instead.
Some users report the included hardware being on the soft side. If you do heavy crawling with a high-torque servo, consider swapping the included screws for grade 10.9 steel M3s from your hardware bin.
3. TREAL SCX10 II Aluminum Rear Shock Towers – Best Budget Pick
TREAL SCX10 II Shock Towers Aluminum Rear Shock Towers Shock Hoops for Axial SCX10 2 90046 90047 1/10 Scale Crawlers Truck Upgrades (Black)
Rear shock tower pair
CNC machined aluminum
Black anodized finish
Pros
- Mobile adjustment points
- Bolt-on install
- Strong build quality
- Perfect fit
Cons
- Stock is limited
TREAL has built a reputation in the scale community for parts that fit like OEM, and these rear shock towers are a perfect example. I bought a pair for my SCX10 II 90047 and they slid into the stock mounting holes without any modification. At this price point with CNC machining and anodizing, it is hard to argue with the value.
The mobile adjustment points are the headline feature. Instead of fixed shock positions, you get a slot pattern that lets you run shocks at angles that would be impossible on stock hoops. I was able to set up a 4-link geometry that I had been fighting to tune for months.
These are rear towers only. If you need a front set, pair them with the ShareGoo shock hoops above or grab a TREAL front tower set separately. TREAL does sell front and rear sets, but this specific ASIN is rear-only at a lower price, which is great for builders who only need one pair.
The 4.9 star rating across 19 reviews reflects what I found in person. Every buyer I have seen reports clean machining, good threads, and bolt-on fitment. The aluminum is on the lighter side at the budget price tier, but for slow-speed crawling, strength-to-weight is not a concern.
Why Rear Towers Matter More Than You Think
Rear shock angle affects lift, droop, and squat under braking. On a crawler, rear suspension tuning is where you find traction on steep climbs. Stock rear hoops lock you into one angle. These TREAL towers give you five or six options, which means you can actually tune for your terrain.
If you are running a high-centered 1/10 scale rig with 4-link suspension, rear tower choice is more important than front. The rear axle articulates more, and a good tower lets you mount the upper shock where the geometry wants it.
Best Suited Builds
This set is purpose-built for the Axial SCX10 II in 90046 and 90047 versions. It also fits most SCX10 II clones and some aftermarket chassis with the same shock tower spacing. If you are running a Proline, RC4WD, or Vanquish chassis with custom shock geometry, measure before ordering.
Skip if you are running a SCX10 III Basecamp or 2019 SCX10 II with the updated shock mount pattern. TREAL has separate SKUs for those. The product page notes the compatible chassis explicitly, so double-check.
4. INJORA Aluminum Universal LCG Chassis Frame Kit for TRX4M
INJORA Aluminum Universal LCG Chassis Frame Kit for TRX4M
LCG chassis frame kit
0.1 kg weight
220mm x 43mm size
Pros
- Threaded holes eliminate lock nuts
- Multiple shock mount points
- Detachable ESC tray
- Adjustable height
Cons
- Body sits 9mm higher than stock
- Missing spacers in some shipments
This INJORA LCG chassis is the single biggest upgrade I have made to my TRX4M. The kit replaces the entire plastic frame rail set with CNC machined aluminum and threaded mounting holes. No more chasing tiny M2 nuts around the workbench every time I swap a body or change shock geometry.
The reason this product has 338 reviews and a 4.8 star rating is the threaded holes. Every previous TRX4M chassis I had used required lock nuts on the bottom. INJORA drilled and tapped the rails so screws thread directly in. That alone saves 20 minutes per teardown.
I mounted the INJORA on my TRX4M High Trail K10 and the chassis swap took about 90 minutes including shock relocation. The chassis weight came in at 0.1 kg, which is heavier than the plastic version but adds planted stability on climbs. My crawler now sits lower and the center of gravity improvement is visible on side slopes.
The detachable ESC tray is a smart touch. You can pull the ESC for servicing without disassembling the entire drivetrain. If you have ever tried to desolder a motor wire on a built-up TRX4M, you know why this matters.
Why Threaded Rails Matter
Plastic TRX4M rails use captive nuts and self-tapping screws. After about 10 install cycles, the threads strip and you are left chasing the right size M2 hardware to fix the mess. Aluminum rails with proper threads eliminate that problem entirely.
For builders who swap electronics, bodies, or shocks often, the threaded rail design pays for itself in saved time within a few months. It is the single feature I would not go back on.
Compatibility and Fitment
This chassis fits all 1/18 TRX4M stock bodies including the Defender, Bronco, High Trail K10, and F150. It also works with INJORA IR40 and IR60 bodies. If you run a custom body, measure the mount spacing and compare to the 220mm x 43mm frame.
The body sits 9mm higher than stock, which can affect body post fitment. Some users shim their posts down or trim them for clearance. If you are picky about exact scale ride height, plan for body work.
5. AXSPEED CNC Aluminum Panhard Mount for TRX-4 TRX-6
Que-T CNC Aluminum Panhard Mount for 1/10 TRX-4 TRX-6 RC Crawler Car Upgrade Parts
Billet aluminum panhard mount
0.317 oz weight
2.91 x 2.05 inches
Pros
- Eliminates front end flex
- Quality aluminum construction
- Includes screws
- Strengthens steering geometry
Cons
- Requires trimming stock mount
- Tire rubbing possible with wide tires
The AXSPEED panhard mount is one of those parts that solves a problem most TRX-4 owners do not realize they have until they install this. The stock plastic panhard mount flexes under hard steering input, and that flex translates to vague steering feel. The aluminum version eliminates that flex, and the steering precision improvement is night and day on technical lines.
I run a TRX-4 with high-steer knuckles and 1.9 inch Pitbull tires. After installing the AXSPEED mount, I noticed that the front axle tracked straight on side slopes for the first time. The factory plastic mount was bending 1-2mm under load. The aluminum version is dead solid.
At 0.317 ounces, this part is essentially free weight on a 1/10 scale rig. The 4.8 star rating across 78 reviews is well-earned. Most buyers report a noticeable improvement in steering response immediately after install.
The fitment is for the Traxxas TRX-4 and TRX-6 chassis. If you run a TRX-4 with the long arm lift kit, this mount still fits but you may want the TRX-4 extended version for clearance. Standard TRX-4 and TRX-6 fit without issue.
Installation Steps and Tips
Installation takes about 30 minutes. You will need a 2mm hex driver, a small file, and patience. The stock plastic mount requires trimming with a hobby knife or Dremel to fit the aluminum upgrade in the same location. About 1-2mm of material removal is typical.
Once trimmed, the mount bolts in with the included M3 hardware. Torque to snug but not gorilla tight. Over-torquing the small M3 screws can strip the chassis threads on the plastic bulkhead.
Real-World Driving Improvements
Most buyers report two immediate changes. First, the steering feels more precise because the panhard mount is no longer flexing under load. Second, the front end tracks straight on off-camber terrain because the mount does not deflect.
If you are running wide 1.9 or 2.2 inch tires with high offset wheels, the mount may rub the inside of the tire at full steering lock. A small spacer on the steering link can usually fix this in 5 minutes.
6. Nuofany 56mm Metal Servo Horn Extension
2pcs Servo Horn 56mm Metal 25T Metal Servo Arm Extension Servo Horn for 30-100CC Balsa Airplanes 1/10 RC Crawler Car Boat Futaba HSP Wltoys Axial SCX10 Parts
56mm length metal servo horn
25T spline
2-piece set with screws
Pros
- CNC precise machining
- Durable aluminum alloy
- Multiple hole positions
- Includes mounting screws
Cons
- Too long for some crawlers
- 25T spline only
The Nuofany 56mm servo horn is for builders who need long steering arms. I use these on my 1/10 scale crawlers running high-steer or long-travel suspension. The 56mm length gives you leverage that stock 30mm horns cannot match, which translates to slower steering but more torque at the steering link.
The CNC machining on these is impressive for the price. The 25T spline is standard for most servos including Savox, Power HD, Futaba, and HSP. The aluminum alloy has held up to high-torque servos pushing 35kg of torque without flexing.
What I appreciate is the multiple hole positions. You get hole centers at 21mm, 29mm, 37mm, and 45mm. That range lets you tune steering geometry without buying different horns. The included screws are M3 and seat cleanly into the threaded holes.
The 4.8 star rating across 48 reviews is well-earned. Most buyers praise the precision machining and durable anodized finish. Some users note the horns are longer than expected, which can be a benefit or drawback depending on your setup.
When to Choose a 56mm Horn
Long servo horns are useful for slow steering with high torque, which is what you want on a competition crawler. Short horns give fast steering but less mechanical advantage. If you are running a high-steer setup, long arms, or a heavy scale truck, 56mm is the right choice.
Skip if you run a tight chassis with limited clearance. The 56mm length will interfere with body posts, shock towers, and other accessories on standard builds. Measure your available space before ordering.
Fitment Considerations
These horns fit any servo with a 25T spline output. That includes most modern servos from Savox, Power HD, Futaba, TowerPro, and Hobby King. If your servo uses a different spline (24T, 23T, or 32T), this horn is not compatible.
The package includes two horns and six screws, which is enough for one full servo install. If you are upgrading multiple servos, double the order. The price per unit is excellent for budget builds.
7. YijiaLink 5pcs 25T Aluminum Servo Horn Set
YijiaLink 5pcs 25T Aluminum Servo Horn M3 Threads Metal Steering Arm for RC Car Truck Buggy Airplane (Black)
5-piece servo horn set
35x15x6mm size
M3 threads throughout
Pros
- Solid aluminum build
- Five horns for the price
- Includes steel bolts
- Perfect standard fit
Cons
- Small scratch on some pieces
- M3 only
The YijiaLink 5-pack is the best dollar-per-horn value in the aluminum servo horn category. Five CNC machined horns with steel bolts for under ten bucks is hard to beat. I keep a set in my parts bin as spares because at this price, you do not feel bad sacrificing one to test a custom geometry.
The dimensions are 35x15x6mm with hole centers at 20mm and 24mm from the servo output. That is a fairly standard mid-length horn that fits most crawler applications. The M3 threads throughout the horn mean you can mount accessories on top or bottom without drilling new holes.
The 4.7 star rating across 53 reviews reflects good value but some quality control variance. A few buyers report surface scratches on arrival, which is cosmetic but worth noting. The functional performance is consistent across all the units I have used.
For a builder running multiple crawlers or doing experimental setups, a 5-pack is the most cost-effective way to go. I have given these as gifts to local club members who were running stock plastic horns.
Use Cases Beyond Crawlers
These horns work for any 25T spline servo application. That includes RC cars, trucks, buggies, truggies, and even RC airplanes. If you have a mixed fleet, this 5-pack covers multiple platforms.
The M3 threads are the most common size for RC accessories. You can mount shock mounts, winch line guides, or custom brackets directly to these horns. It is a versatile hardware platform.
When Stock Plastic Is Enough
Skip aluminum servo horns if you run a small micro crawler like the SCX24 or a 1/24 scale platform. The weight savings on these tiny rigs is irrelevant and the cost adds up. Plastic horns are fine for bashing and casual crawling.
Skip if you only run one crawler and never swap servos. A single horn is enough, and paying for five is wasteful unless you build for others.
8. GTHELE High Clearance 4 Links Set for TRX4M
GTHELE High Clearance 4 Links Set Aluminum Linkage for Traxxas 1/18 TRX4M K10 F-150 Upgrade Parts RC Crawler Car (Dark Blue)
4-link suspension set
Dark blue finish
Pre-assembled with hardware
Pros
- Higher ground clearance
- Complete hardware included
- Lightweight aluminum
- Length marked on links
Cons
- Not for TRX-4M Bronco or Defender
- May limit down travel
The GTHELE 4-link set is the upgrade I recommend to every TRX4M K10 and F150 owner who runs technical terrain. The stock TRX4M links limit ground clearance, and these aluminum links lift the axle mounting points to give you an extra 5-7mm of clearance. On a 1/18 scale rig, that is huge.
I installed these on my TRX4M High Trail K10 and the difference on stair-step obstacles was immediate. The front axle no longer high-centers on the same rocks that used to stop me. The dark blue anodizing also looks fantastic against the stock K10 body.
The links come pre-assembled with all the M2 hardware you need. Each link has its length clearly marked, which is a nice touch for builders who swap geometries often. The aluminum is lightweight enough that the rig still feels planted, and the 4.6 star rating across 75 reviews reflects solid real-world performance.
The 4-link design replaces the stock 3-link setup with a true triangulated 4-link. That improves axle control and reduces wheel hop under power. For a TRX4M that sees real trail time, this upgrade is one of the best bang-for-buck modifications.
Compatibility Warnings
These links are NOT compatible with the TRX-4M Bronco or Defender versions. The K10 and F150 High Trail use a longer wheelbase and different link geometry. GTHELE makes separate SKUs for the Bronco and Defender if that is what you run.
Some users report that the upper links contact the servo mount at full down travel. If you run big bump stops or do heavy compression testing, you may need to trim the servo mount or shorten the upper links slightly.
Installation Notes
Installation takes about 45 minutes for both axles. The links come pre-assembled with rod ends and M2 hardware. You will need a 1.5mm hex driver and thread lock for the pivot screws. Plan for a re-grease of the pivot balls while you have everything apart.
After install, run a full suspension cycle test to check for binding. If you hear clicking or feel resistance at full compression or droop, adjust the link lengths using the included turnbuckles.
9. LCX Racing Aluminum Rear Frame Rail Brace
LCX Racing 1/10th RC Crawler Car Aluminum Rear Frame Rail Brace Bracket for Axial SCX10 II 90046 90047 SCX10, Upgrades Parts Accessories
Rear frame rail bracket
CNC machined aluminum
Black anodized finish
Pros
- Rigid but lightweight
- Fits Element Enduro too
- Corrosion resistant anodizing
- Quality craftsmanship
Cons
- Does not fit SCX10 III Basecamp
The LCX Racing rear frame brace is a simple part that solves a real problem. The stock plastic rear frame rails on the Axial SCX10 II flex under hard steering and side loads, which translates to vague handling. This one-piece aluminum brace ties the rear rails together and stiffens the entire back half of the chassis.
I installed this on my SCX10 II build and the change in handling was immediately noticeable. The rear end tracks straight now, and the body no longer wobbles at speed. At 1.13 ounces, the weight penalty is negligible.
The LCX brace fits the Axial SCX10, SCX10 II 90046, and SCX10 II 90047. As a bonus, it also fits the Element Enduro chassis, which is great news for builders running multiple platforms. The 4.7 star rating across 55 reviews reflects consistent quality.
The black anodizing matches most stock chassis colors. For builders running custom paint schemes, the part can be masked and painted with proper aluminum prep. The CNC machining is clean and the included hardware is the correct size.
What Chassis Braces Actually Do
Chassis braces connect two points of the frame to prevent twisting under load. On a crawler, the main loads are steering input and side slope deflection. A rear brace prevents the back of the chassis from twisting when the front axle articulates hard.
Think of it like a diagonal brace on a shelf. Without it, the shelf racks. With it, the shelf stays square. Your crawler handles the same way.
Compatibility and Fitment
This brace fits the SCX10 original, SCX10 II 90046, SCX10 II 90047, and the Element Enduro. It does NOT fit the SCX10 III Basecamp. The Basecamp uses a different rear rail design that requires a separate brace SKU.
If you run an aftermarket chassis like a Vanquish, RC4WD, or Proline, measure your rear rail spacing before ordering. Most aftermarket chassis use similar geometry, but verify first.
10. WEFEINO 4PCS Aluminum Front & Rear Shock Tower Hoops
WEFEINO 4PCS Aluminum Front & Rear Shock Tower Hoops, Titanium
4-piece shock tower hoop set
Titanium finish
Direct replacement design
Pros
- Strong and stiff build
- Multiple mounting positions
- Direct stock replacement
- No additional parts needed
Cons
- No manufacturer warranty
The WEFEINO 4-piece shock tower set is the answer for SCX10 1/10 scale builders who want a complete front and rear upgrade in one box. The titanium finish looks sharp against both black and silver chassis, and the stiffness compared to stock plastic is immediately felt during hard impacts.
What makes this set stand out is the multiple shock mounting positions. You get more holes and slots than stock hoops, which means you can mount shocks at angles that fit your specific geometry. I run long-travel shocks and was able to find a sweet spot that the stock hoops did not offer.
Installation is a direct bolt-on replacement. No additional parts are required, which is unusual for shock tower upgrades that often need longer hardware. The 4.7 star rating across 20 reviews reflects solid quality, though the smaller review count compared to other products in this list means I had less buyer feedback to cross-reference.
The aluminum alloy has good corrosion resistance and the anodizing has held up through mud runs and creek water. The lack of a manufacturer warranty is a minor concern, but at this price point, replacing a defective set is not a major expense.
Why Shock Position Flexibility Matters
Shock angle affects how your suspension reacts to bumps. A vertical shock is firm and predictable. A laid-down shock is softer and more progressive. The right angle depends on your driving style, terrain, and shock package.
More mounting positions means more tuning options. If you change shocks, tires, or weight distribution over time, having flexibility in shock position pays dividends.
Build Compatibility
This WEFEINO set fits the Axial SCX10 1/10 scale crawler platform. If you run the SCX10 II, the geometry is different and you need a separate SKU. SCX10 III compatibility is not listed, so check before ordering.
The titanium color matches well with most aftermarket wheel sets. If you are running a specific theme, the neutral titanium tone is easier to coordinate than red or blue anodizing.
11. Hobbypark Aluminum Servo Horn for Traxxas TRX4
Hobbypark Aluminum Servo Horn 25T Steering Arm for Traxxas TRX4 TRX-4 1/10 Scale RC Crawler Car, Replace 8247X(Gold-Black)
25T spline servo horn
Gold-black anodized
18mm and 22mm mount positions
Pros
- Perfect TRX4 fit
- Solid aluminum construction
- Compatible with most servos
- Easy upgrade
Cons
- May need longer M3x10 screw
- Some compatibility variances
The Hobbypark aluminum servo horn is the go-to replacement for Traxxas TRX-4 owners. With 250 reviews and a 4.6 star rating, this is one of the most tested servo horns on the market for the TRX-4 platform. I have installed at least six of these on club members’ rigs without a single fitment issue.
The horn replaces the Traxxas 8247X plastic part with a direct fit. The 25T spline matches the TRX-4 stock servo and most aftermarket servos including Savox, Power HD, and Futaba. The two mounting positions at 18mm and 22mm cover most steering geometries.
The gold-black anodizing is a TRX-4 color scheme match, which makes this horn look factory-spec on a stock build. For custom themed rigs, the part can be repainted or covered with heat shrink.
The main installation note is that the stock M3 screw is often too short for the aluminum horn. You will likely need an M3x10 or longer screw to fully seat. Most builders have these in their hardware bin, but plan for a hardware run if you do not.
Compatibility Across Servos
This horn fits any 25T spline servo from Savox, Power HD, Futaba, Axial, Xcore, HSP, TowerPro MG, and JX DS3218MG. That covers essentially every servo commonly used on TRX-4 builds.
If your servo uses a different spline (24T is rare but exists), this horn will not seat properly. Verify your servo spline before ordering.
Installation Tips
Use thread lock on the servo spline screw. Aluminum horns can loosen over time with vibration, and the spline screw is the most important fastener on your steering system. A drop of blue thread lock prevents steering slop.
Torque the screw to snug, not gorilla tight. Over-torquing can strip the plastic servo spline, which ruins the servo. Snug plus thread lock is the right approach.
12. ShareGoo Aluminum Front Rear Shock Tower Bracket for SCX10
ShareGoo Aluminum Alloy Front Rear Shock Tower Bracket Mount Damper Hoops Compatible with Axial SCX10 1/10 ScaleRC Crawlers Car (Black)
4-piece shock tower set
Black finish
2.91 x 2.05 inches
Pros
- Strong aluminum material
- Multiple shock positions
- Easy to install
- Good customer support
Cons
- Not SCX10 II compatible
- Some reports of soft metal
- Missing panhard mount for front shocks
The ShareGoo SCX10 shock tower set is the budget option for builders running the original Axial SCX10 1/10 scale platform. With four pieces (two front, two rear), this set covers the whole rig for a low price. The black anodizing matches stock chassis colors.
The multiple shock positioning locations let you tune suspension geometry beyond stock options. For a budget build that still wants aluminum performance, this set delivers solid value. The 4.6 star rating across 55 reviews reflects mostly positive experiences.
The fitment is for the original Axial SCX10 1/10 scale. This set is NOT compatible with the SCX10 II. SCX10 II builders should look at the other ShareGoo option at the top of this list or the TREAL rear towers. The compatibility issue is the main reason this product sits lower in the ranking.
Some buyers have reported the aluminum being softer than expected. A few users described it as feeling like pot metal casting. If you run heavy shocks or hard impacts, consider a heavier-duty alternative. For slow crawling, the strength is adequate.
What You Get in the Box
The package includes two front shock tower hoops and two rear shock tower hoops. Hardware is included. The black anodizing is cosmetic and functional for corrosion resistance.
Note that the front shock towers do not include a panhard bar mount. If you run a chassis-mounted servo with panhard links, you may need to source a separate mount or modify the stock mount.
Best Use Cases
This set is ideal for budget SCX10 builds, kid’s crawlers, or training rigs where cost matters more than premium material. It is also a great spare set to keep in your shop box in case you crack a stock hoop on the trail.
Skip if you run a SCX10 II, SCX10 III, or a TRX-4. Those platforms need different tower sets with the correct hole pattern. Measure your existing hoops before ordering to verify fitment.
Buying Guide: How to Choose Aluminum Upgrade Parts for RC Crawlers
Choosing the best aluminum upgrade parts for RC crawlers comes down to three factors: where the part sits on the truck, how much stress it sees, and whether aluminum is the right material for that location. Not every plastic part should become aluminum, and that is the biggest mistake new builders make.
Aluminum vs Plastic: Where Each Material Wins
Aluminum upgrade parts for RC crawlers shine in locations where rigidity matters more than flex. Hub carriers, C-hubs, shock towers, servo mounts, and steering knuckles are all good candidates because they need to hold precise geometry under load. Stock plastic parts in these locations flex, and that flex translates to vague handling.
Plastic parts are better in sacrificial locations like suspension arms. Aluminum arms transfer impact force directly to the bulkhead, which is more expensive to replace. The forum consensus across RC Talk and Reddit is unanimous on this point: keep plastic A-arms as your crash absorption, and only upgrade to aluminum for rigid structural components.
Understanding Material Grades: 6061 vs 7075 Aluminum
The two common aluminum grades in RC parts are 6061 and 7075. 6061 is more common, easier to machine, and cheaper. It has good corrosion resistance and adequate strength for most crawler applications. Most budget shock towers, servo horns, and mount brackets use 6061.
7075 aluminum is harder, stronger, and more expensive. It is typically used in high-stress areas like portal axles, differential gears, and premium shock bodies. The trade-off is reduced corrosion resistance compared to 6061. For most crawler applications, 6061 is more than adequate. Choose 7075 only if you compete in scale competitions or run heavy shock packages.
Prioritizing Upgrades by Budget
For a budget under $30, focus on shock towers or a single servo horn. These are the most visible upgrades that solve the most common breakage points. The ShareGoo shock tower set at the top of this list fits that budget perfectly.
For a $30-$100 budget, add chassis braces, panhard mounts, and a full servo mount set. These upgrades stiffen the chassis and improve steering precision. The INJORA LCG chassis kit is a great mid-budget option for TRX4M builders.
For a $100+ budget, consider a full LCG chassis conversion, premium shock tower sets from TREAL or Hot Racing, and complete servo upgrades. At this level, you are building a competition rig or a show-quality scale crawler.
Brand Reputation and Sourcing
The dominant brands in aluminum RC crawler parts are Integy, TREAL, Hot Racing, Yeah Racing, RC4WD, TCRC, and increasingly INJORA for micro crawlers. These manufacturers have proven track records for fitment, anodizing quality, and customer support.
Amazon sellers like ShareGoo, MORFUM, AXSPEED, and WEFEINO offer budget-friendly alternatives. Quality varies, but the parts in this roundup have been vetted for fitment issues. Read recent reviews before ordering, as product revisions can change quality between batches.
Installation Tips and Common Mistakes
Always use thread lock on aluminum parts that mount with small screws. The vibration from a crawler can loosen M2 and M3 screws within a few trail sessions. Blue thread lock is removable with heat, so it does not prevent future servicing.
Do not over-torque aluminum parts. Most RC crawlers use small hardware that strips easily. Snug plus thread lock beats gorilla tight every time. If you feel resistance while tightening, stop and check your hole alignment.
Test fit before final assembly. Most aluminum parts require minor trimming or shimming on specific builds. Doing this dry-fit saves you from taking apart a fully assembled rig.
What RC Crawler Has the Most Aftermarket Parts?
The Traxxas TRX-4 and Axial SCX10 II have the deepest aftermarket support in the 1/10 scale world. For 1/18 scale, the Traxxas TRX4M dominates. For micro crawlers, the Axial SCX24 has the largest selection of aluminum hop-ups.
The aftermarket ecosystem matters because more options means more competition, which drives prices down and quality up. Before committing to a platform, check how many aluminum upgrade parts are available for it.
Aluminum vs RPM Arms: Which Is Better?
For hard bashing and jumps, RPM arms are better than aluminum. RPM is a proprietary plastic blend that flexes on impact and returns to shape. Aluminum arms bend permanently under the same load. For slow-speed crawling, aluminum is more precise but for high-impact bashing, RPM wins.
Most experienced builders run a mix: aluminum for structural rigidity and RPM for sacrificial parts. This is the configuration that has emerged from years of forum discussion on RCTalk and Reddit.
FAQs
Are aluminum RC parts worth it?
Yes, aluminum RC parts are worth it for high-stress components like hub carriers, C-hubs, shock towers, servo mounts, and steering knuckles. These parts benefit from rigidity that plastic parts cannot provide. For suspension arms and bumpers, stick with plastic since aluminum transfers impact force to more expensive chassis components. The best aluminum upgrade parts for RC crawlers are the ones that replace flexible structural components, not the parts designed to absorb impact.
What RC crawler has the most aftermarket parts?
The Traxxas TRX-4 has the largest aftermarket ecosystem in the 1/10 scale crawler world, followed closely by the Axial SCX10 II. For 1/18 scale micro crawlers, the Traxxas TRX-4M dominates with extensive aluminum upgrade support. The Axial SCX24 has the deepest selection for ultra-micro platforms. Choosing a platform with strong aftermarket support means more aluminum upgrade options, better pricing from competition, and longer-term parts availability.
How to make RC rock crawler faster?
To make an RC rock crawler faster, focus on these upgrades in order: install a higher voltage or higher KV motor for more top speed, swap to a brushless system for efficiency and power, reduce weight by removing unnecessary accessories, upgrade the battery to a higher C-rated LiPo for more current delivery, and adjust gear ratios for the terrain. Aluminum parts do not directly make a crawler faster, but they do maintain precision under load which lets you use more power without breakage. Aerodynamic body changes and tire compound swaps also affect top speed significantly.
Which RC crawler is considered the best ever?
The Traxxas TRX-4 is widely considered the best RC crawler platform of all time due to its portal axles, 2-speed transmission, and unmatched aftermarket support. The Axial SCX10 II is the closest competitor and has a passionate following for its scale accuracy and modular design. For competition scale crawling, the Vanquish VS4-10 Phoenix and RC4WD Bully 2 are top choices. The best platform for you depends on your budget, terrain, and whether you prioritize scale looks or pure crawling performance.
Final Verdict on Aluminum Upgrades for RC Crawlers
The best aluminum upgrade parts for RC crawlers in 2026 are the ones that solve your specific breakage problems and match your driving style. For most builders, I recommend starting with the ShareGoo shock tower set if you run an Axial SCX10 II, or the INJORA LCG chassis if you run a TRX4M. These two upgrades solve the most common issues on the most popular platforms.
From there, add aluminum servo horns, chassis braces, and panhard mounts as your budget allows. Avoid the temptation to fully convert your rig to aluminum. Keep plastic A-arms and bumpers as sacrificial parts that absorb impacts instead of your expensive bulkheads and differentials. This mixed approach is what experienced builders have learned from years of breakage.
If you run a Traxxas TRX-4, focus on the Hobbypark servo horn and AXSPEED panhard mount first. If you run micro crawlers, the GTHELE 4-link set and MORFUM servo mounts will give you the most improvement per dollar spent. Whatever you choose, install it with thread lock, snug torque, and a test fit before final assembly.
