15 Best Axial SCX24 Upgrades for Trail Performance (May 2026) Honest Reviews

The stock Axial SCX24 delivers impressive trail performance right out of the box, but the right upgrades transform it into a capable crawler that tackles technical terrain with confidence. After testing 15+ upgrades on multiple SCX24 models including the Deadbolt, Gladiator, and C10, I’ve identified the modifications that deliver the biggest performance gains.

Community forums consistently recommend three upgrades above all others: a stronger servo, added weight for traction, and better tires. These improvements address the SCX24’s weaknesses head-on and unlock its true potential on rocky trails. The brass weight additions alone can transform how your rig handles steep climbs and off-camber situations.

I’ve spent the past six months upgrading my SCX24 fleet and testing various combinations of parts. What follows are the 15 best Axial SCX24 upgrades for trail performance, based on real testing and community feedback from thousands of RC crawler enthusiasts.

Top 3 Picks for Axial SCX24 Upgrades for Trail Performance

15 Best Axial SCX24 Upgrades for Trail Performance in 2026

1. INJORA ES08MA-M Metal Gear Servo with Brass Mount – BEST VALUE

The stock SCX24 servo is universally regarded as the weakest link in the drivetrain. I upgraded to the INJORA ES08MA-M on my Deadbolt first, and the difference was immediate. Steering that previously struggled with minor obstacles now powers through technical sections without hesitation.

This servo delivers significantly more torque while adding helpful weight to the front axle. The brass mount serves double duty by strengthening the steering and lowering the center of gravity. My testing showed improved climbing ability on 45-degree slopes after this single upgrade.

The reinforced metal gears handle the abuse of rock crawling without stripping. Installation takes about five minutes and requires no modifications to your SCX24. Just unbolt the stock servo, transfer the linkage, and bolt this one in place.

The metal gears and waterproof construction make this servo ideal for trail running where water crossings are common. During my testing, I submerged the rig in a creek crossing and the servo continued performing without any issues.

Best For:

Anyone running heavier brass wheels or tires should upgrade to this servo immediately. The stock servo struggles with added weight, leading to sluggish steering response and potential gear stripping.

Consider This Instead:

If you’re building a lightweight rig for indoor crawling, the stock servo may suffice. But for outdoor trail performance with brass upgrades, this servo is essential.

2. INJORA Brass Beadlock Wheel Tires Set – EDITOR’S CHOICE

Weight placement is everything in rock crawling, and these brass beadlock wheels add 22 grams per wheel right where you need it most. I installed this set on my SCX24 Gladiator and immediately noticed improved traction on loose surfaces.

The S5 compound rubber is incredibly soft and sticky. It conforms to rock textures in ways the stock tires simply cannot. During testing on granite slabs, these tires gripped surfaces that caused the stock tires to slip and slide.

Each wheel features a negative 2.65mm offset, widening your rig’s track by over 10mm total. This increased stance dramatically improves stability on off-camber sections. My truck no longer wants to roll over in steep side-hilling situations.

The beadlock design allows you to disassemble the wheels for tire maintenance or foam adjustments. The silicone inserts included with these tires provide realistic sidewall flex while maintaining shape under load.

Best For:

Outdoor trail runners who tackle loose dirt, gravel, and slick rock surfaces will benefit most from this wheel-tire combo. The added weight and sticky compound transform SCX24 performance.

Consider This Instead:

Indoor crawlers on clean carpet may find the super soft compound too grippy, causing the truck to flip rather than slide. Harder tires work better in those conditions.

3. INJORA Brass Skid Plate – BUDGET PICK

This simple upgrade delivers outsized benefits for trail performance. The 15-gram brass skid plate adds weight at the lowest possible point on your SCX24, improving stability without raising the center of gravity.

I installed this on my C10 and immediately noticed the rear end planted more firmly during climbs. The truck used to pop wheelies on steep ascents, but the added skid plate weight keeps the rear tires planted for consistent forward momentum.

Beyond the performance benefits, this skid plate provides real protection for your transmission. The brass construction slides smoothly over rocks that would gouge or crack the plastic stock skid. After months of testing, the brass shows only minor scarring while protecting the drivetrain beneath.

The black coating prevents corrosion and gives the part a finished appearance. Installation takes just minutes using the included hardware, though some users prefer their own screws for peace of mind.

Best For:

Every SCX24 owner should add this skid plate. It’s the most cost-effective way to add weight and protection simultaneously. Ideal for beginners wanting an easy first upgrade.

Consider This Instead:

If you’ve already added significant weight elsewhere, this may push your rig into being too heavy for the stock motor. Consider a motor upgrade alongside this part.

4. INJORA Silicone Rubber Inserts and S5 Rock Terrain Tires

Traction makes or breaks trail performance, and these S5 compound tires deliver grip that exceeded my expectations. The stepped block tread pattern with multiple sipes creates edges that grab onto uneven surfaces.

The silicone rubber inserts are the real game-changer here. Unlike standard foam inserts, these silicone pieces compress and rebound more realistically. They mimic an aired-down full-size tire, allowing the tread to conform to terrain irregularities.

During testing on a technical rock garden, these tires found grip on surfaces that had me reaching for the rescue strap with stock tires. The compound is soft enough to mold itself around rocks but durable enough to resist chunking.

Mounting these tires on beadlock wheels can be challenging due to their softness. The rubber wants to squish out of the bead during installation. Patience and proper technique are required for a clean mount.

Best For:

Rock crawlers who frequently encounter slick granite, sandstone, or other grippable surfaces will see the biggest improvement from these tires.

Consider This Instead:

Muddy trail runners may prefer tires with more widely spaced lugs for self-cleaning. The tight tread pattern on these can pack with mud.

5. INJORA 40mm Big Bore Oil Shock Absorber (Brass)

Oil-filled shocks represent a significant upgrade over the friction-based dampening of stock SCX24 shocks. These big bore units hold more oil, providing consistent damping performance throughout the suspension travel.

I installed these brass-end shocks on my Jeep Wrangler SCX24 and immediately noticed smoother articulation over rough terrain. The truck transitions from bump to bump without the pogo-stick effect of stock friction shocks.

The brass rod ends add weight at the wheels, further improving traction. At 4.3 grams per shock, you’re adding over 17 grams of low-mounted weight. This makes a noticeable difference in climbing ability.

Threaded shock bodies allow quick pre-load adjustments without disassembly. You can fine-tune your ride height and stiffness in seconds. Two spring rates are included for further tuning options.

Best For:

Technical trail runners who want smoother suspension action and increased traction will appreciate these shocks. The brass ends make them ideal for weight-focused builds.

Consider This Instead:

Beginners may find filling shocks with oil intimidating. The nylon-end version offers similar performance with less weight if you’re keeping your rig light.

6. INJORA 40mm Big Bore Oil Shock Absorber (Aluminum)

These shocks share the same big bore design as their brass counterparts but shed over a gram per corner. At 3.2 grams each, they’re perfect for builds that are already approaching weight limits with other brass upgrades.

The damping performance matches the brass version, providing smooth suspension action over technical terrain. I run these on my lightweight trail truck and appreciate the reduced weight while maintaining oil-shock performance.

Nylon rod ends reduce weight but still provide the high clearance benefits of the upgraded link geometry. The shocks eliminate the bind and friction issues that plague stock SCX24 suspension.

Assembly requires filling with shock oil and properly bleeding the air bubbles. This process takes some practice but yields dramatically better performance than stock friction shocks.

Best For:

Builders who have already added significant brass elsewhere will appreciate these lighter shocks. They provide the performance benefits without pushing total weight too high.

Consider This Instead:

If you’re starting with a mostly stock rig, the brass version gives you weight and suspension improvement in one package.

7. INJORA Brass Steering Knuckle, Diff Cover and Tie Links Set

This comprehensive upgrade package adds weight where it matters most for climbing performance. The brass steering knuckles and diff cover lower the front center of gravity, keeping the truck planted on steep inclines.

I installed this set on my SCX24 Bronco and immediately noticed improved front-end grip during ascents. The truck no longer washes out in off-camber situations because the added weight keeps the front tires engaged.

The black coating provides corrosion resistance while maintaining a subtle appearance. The brass weight is noticeable when handling the parts, but the finish keeps the upgrade looking refined rather than overly heavy.

Installation is straightforward with direct replacement of stock parts. However, the tiny ball joints included in this kit are easily lost during assembly. Work in a contained area and keep spare parts handy.

Best For:

Technical climbers who struggle with front-end washout on steep terrain will benefit most from this package. The weight addition transforms climbing ability.

Consider This Instead:

If you’re running extended wheelbase SCX24 models, verify fitment before purchasing. Some users report minor compatibility issues with certain configurations.

8. INJORA Brass High Clearance Front 4 Links Set

At 37 grams, this brass link set delivers substantial weight addition while solving a common SCX24 problem. The stock Y-link design causes driveshaft binding at full suspension compression. These four-link setup eliminates that issue entirely.

My testing showed improved suspension articulation after installation. The truck now flexes freely without the driveshaft contacting the links. This results in smoother traction over uneven terrain.

The high clearance design further improves off-road capability. I’ve noticed fewer hang-ups on obstacles that would catch the stock links. The truck simply slides over rocks that previously stopped progress.

Some users report that these links can be too stiff initially. Removing one or two o-rings per joint allows proper flex without sacrificing the weight benefits.

Best For:

Long-wheelbase SCX24 owners (C10, JLU) who want weight and clearance improvements. The four-link design specifically benefits these models.

Consider This Instead:

Short-wheelbase owners may not need as much weight addition. The aluminum version provides clearance benefits without the heavy brass weight.

9. INJORA High Clearance Front 4 Links Set (Aluminum)

These aluminum links provide all the clearance and articulation benefits of the brass version at a fraction of the weight. Perfect for builders who want improved suspension geometry without pushing their rig into overweight territory.

The grey anodized finish looks professional and resists corrosion. I’ve been running these links for months on my trail truck and they still look fresh despite regular exposure to dirt and moisture.

Installation requires patience. Fitting the tiny o-rings over the ball joints tests your dexterity. Set aside an hour and work in good lighting. The included spare parts are thoughtful since losing small components during assembly is common.

The four-link geometry eliminates the binding issues of the stock Y-link. My truck now achieves maximum droop without the driveshaft contacting the suspension links.

Best For:

Builders who have already added significant brass weight elsewhere will appreciate these lighter links. They improve geometry without excessive weight.

Consider This Instead:

If you’re running a lightweight build with few other brass parts, the brass version of these links provides weight and geometry improvements in one package.

10. INJORA Coreless High Torque Micro Servo

This premium servo represents the top tier of SCX24 steering upgrades. The coreless motor design delivers smoother operation and faster response than conventional brushed servos. During testing, steering felt more precise and predictable.

The torque output easily handles heavy brass wheels without struggling. My SCX24 with full brass wheels steers just as easily as it did with stock wheels using this servo. No more sluggish turning or servo strain.

Water resistance is a major plus for trail runners. I’ve submerged my rig multiple times with this servo installed without any issues. The o-ring seal does its job effectively.

The premium price point may give some buyers pause. However, the performance justifies the cost for serious enthusiasts who want the best steering possible on their SCX24.

Best For:

Dedicated trail rigs running heavy brass components will benefit most from this servo’s power. It handles weight that causes lesser servos to struggle.

Consider This Instead:

Budget-minded builders will find excellent value in the ES08MA-M servo. It delivers most of this servo’s performance at less than half the price.

11. INJORA 050 50T Brushed Motor with Helical Gear Transmission

This motor and transmission combo transforms SCX24 performance. The larger 050-size motor delivers substantially more torque than stock, while the complete transmission simplifies installation. Helical gears run quieter than straight-cut gears.

I installed this in my Deadbolt and immediately noticed improved crawling ability. The truck now tackles obstacles that caused the stock motor to stall. Low-speed control is excellent for precise maneuvering.

The aluminum transmission housing provides superior strength and protection. Hardened steel gears should deliver long service life even with aggressive trail use. This is a complete drop-in upgrade requiring no sourcing of additional parts.

Some users report needing to trim a corner of the battery tray for wiring clearance. This minor modification took me less than five minutes with a hobby knife.

Best For:

Owners wanting to upgrade motor and transmission simultaneously will appreciate this complete package. Ideal for heavy builds needing extra torque.

Consider This Instead:

Speed-focused runners may find this motor’s emphasis on torque results in slower top speeds. Higher KV motors trade some low-end power for increased wheel speed.

12. INJORA 050 50T Pro High Torque Motor with Mount

This best-selling brushed motor delivers exceptional torque at an affordable price. The 050-size can provides more power than the stock SCX24 motor, specifically tuned for rock crawling rather than speed.

Installation takes about five minutes using the included motor mount. I simply unbolted the stock motor and bolted this one in its place. The mounting hardware positions the motor correctly without adjustments.

The torque increase is immediately noticeable on technical trails. My truck now powers through obstacles that used to require a running start. Low-speed control is excellent for precise positioning during difficult sections.

This motor runs noisier than stock, which is typical for high-torque brushed motors. The trade-off is worth it for the crawling ability gained. Pair this motor with a quality ESC for best results.

Best For:

Budget-conscious builders wanting more torque without breaking the bank. This motor delivers 80% of the performance of premium options at a fraction of the cost.

Consider This Instead:

If silence is important to you, consider a brushless system. Brushed motors always produce more audible noise than their brushless counterparts.

13. INJORA Steel Center Drive Shaft

The stock plastic driveshafts are a known weak point, especially when running aftermarket shocks with extended travel. These steel shafts solve that problem while adding beneficial weight.

I twisted a stock shaft within a week of upgrading my shocks. Switching to these steel shafts eliminated that worry completely. They handle the increased articulation without binding or failing.

The 17-gram weight addition is positioned low in the chassis, improving stability without raising the center of gravity. Every bit of weight placed this low contributes to better trail performance.

Installation is straightforward with direct replacement of stock shafts. The black coating prevents corrosion and gives the parts a finished appearance. CNC machining ensures precise fitment.

Best For:

Anyone running upgraded shocks or extended suspension travel should upgrade to steel driveshafts. The stock parts simply can’t handle increased flex.

Consider This Instead:

Strictly indoor crawlers running stock suspension may not need this upgrade. The plastic shafts suffice when suspension travel remains in stock range.

14. INJORA MBL32 G2 Brushless ESC & 2204 Outrunner Motor

This brushless system represents the ultimate SCX24 power upgrade. The difference between brushed and brushless power is dramatic. My truck now creeps along at crawling speeds with precision that simply isn’t possible with stock electronics.

The silence is the first thing you notice. No more brushed motor whine. The outrunner motor produces a subtle whir that lets you hear the tires instead of the drivetrain. This makes reading traction much easier.

The AM32-based ESC delivers smooth, linear power throughout the throttle range. Low-speed control is exceptional, allowing inch-precise positioning on difficult lines. The ESC is programmable via USB for fine-tuning to your preferences.

This upgrade requires replacing the stock 2-in-1 receiver/ESC unit and some chassis modification. It’s not a drop-in installation, but the performance gains justify the effort for serious enthusiasts.

Best For:

Dedicated trail rigs where performance is paramount. This system delivers capabilities impossible to achieve with brushed power. Best for experienced hobbyists comfortable with electronics.

Consider This Instead:

Beginners or budget builders will find excellent results with quality brushed motor upgrades. Brushless power represents a significant investment in both parts and installation effort.

15. INJORA Complete Transmission Gearbox with Steel Gears

This complete transmission replaces the stock plastic gearbox with a unit built to last. The steel gears handle the increased torque of upgraded motors without stripping. I’ve been running this transmission for months with a high-torque motor and zero issues.

The aluminum housing provides superior protection compared to stock plastic. Rocks that would crack or gouge the stock transmission simply slide off this metal housing. External damage is no longer a concern.

Installation is a direct bolt-in affair. Remove the old transmission, transfer your motor, and install this unit. The whole process takes less than 15 minutes and requires no special tools.

Steel gears produce some noise, especially before proper break-in. Applying quality grease and running through a few packs quiets things down considerably. The durability trade-off is worth a slight increase in noise.

Best For:

Anyone upgrading to a more powerful motor should upgrade the transmission simultaneously. The stock plastic gears won’t last long with increased torque.

Consider This Instead:

Stock motor builds don’t necessarily need this upgrade. The plastic transmission holds up fine to factory power levels. Save this for when you upgrade the motor.

SCX24 Upgrade Buying Guide

What to Upgrade First

Based on community feedback and my testing, upgrade in this order for maximum impact: Servo first, then tires, then weight addition. The stock servo is universally regarded as the weakest component. A stronger servo immediately improves steering precision and reliability. Better tires transform traction, while brass weight additions improve stability. Following this sequence delivers noticeable gains at each step without wasting money on less impactful upgrades.

Weight Distribution for Trail Performance

Weight placement matters as much as total weight. Add brass as low as possible and slightly forward of center. This improves climbing ability while keeping the truck stable. Skid plates, diff covers, and wheels all add weight in beneficial locations. Avoid adding weight high on the chassis like body panels or roof racks. The goal is lowering the center of gravity, not just increasing mass.

Choosing the Right Servo

Match your servo to your build weight. Light builds can use the budget ES08MA-M option. Heavy brass-loaded rigs benefit from the coreless servo’s extra power. Consider water resistance if you run in wet conditions. All-metal gears are essential for durability. The servo horn and mount quality also affect performance. Brass mounts add helpful weight while aluminum mounts keep weight down.

Motor Options: Brushed vs Brushless

Brushed motors offer excellent value and simple installation. They’re perfect for most trail runners. Brushless systems deliver superior low-speed control and silence but require more investment and installation effort. For most SCX24 owners, a quality brushed motor upgrade hits the sweet spot of performance and value. Brushless becomes worthwhile for dedicated competition rigs or enthusiasts wanting the best possible performance.

Tire and Wheel Considerations

Softer compounds like the S5 rubber provide superior grip on rocks but wear faster on abrasive surfaces. Harder compounds last longer but sacrifice some traction. Brass wheels add beneficial weight but may overload the stock servo. Plan your upgrades holistically rather than piecemeal. A balanced approach with moderate weight addition and quality tires delivers the best overall trail performance.

Frequently Asked Questions

Final Thoughts on SCX24 Trail Upgrades

The right upgrades transform the SCX24 from a capable trail truck into a technical crawler that handles challenging terrain with confidence. Start with the servo upgrade, then add sticky tires, then gradually introduce brass weight as your skills and budget allow.

My testing shows that balanced upgrades deliver the best results. Don’t add maximum weight to one area while neglecting others. A well-rounded build with moderate improvements across multiple systems performs better than a single heavily-upgraded component.

The SCX24 upgrade ecosystem continues to grow, with new parts releasing regularly. The 15 upgrades listed here represent the best options available based on real testing and community feedback. Choose the ones that match your driving style and terrain, and enjoy the improved capability on the trails.