SCX30 Upgrade Parts Guide
The Axial SCX30 is a capable micro crawler right out of the box. You can take it straight out of the box and start crawling directly, but once you start pushing it on steeper rocks, loose dirt, or technical climbs, you’ll quickly notice its limits. That’s where smart upgrades come in.
What Should You Upgrade First on the SCX30?
This is the recommended upgrade order:
- Tires & Wheels
- Brass / Low CG Parts
- Steering Servo
- Links & Suspension
- Brushless System
1. SCX30 Tire & Wheel Upgrades
For most SCX30 owners, tires and wheels are the single first upgrade that makes a noticeable difference in real driving.
Tires: Stock tires perform well on general surfaces, but more technical terrain exposes their limitations in grip and stability.
With better tires installed:
- Rock grip becomes more consistent
- Side-hill driving improves noticeably
- Climbing traction performs better on steep terrain
- Crawling consistency feels smoother and more controlled
- Obstacle control becomes more precise and predictable
Wheels: Wheels do more than hold the tires — they affect how the entire truck balances.
Brass or weighted wheels add low-mounted weight, helping lower the center of gravity and improving stability during climbs and side-hill driving.
Wider offset wheels increase the track width, giving a broader stance and reducing the chance of rolling over during technical climbs.
2. SCX30 Brass Upgrades & Low CG Parts
After tires and wheels, most SCX30 owners move on to brass and low center of gravity (Low CG) upgrades.
Instead of simply increasing total weight, brass upgrades help place weight in key areas to improve overall balance through:
- A lower center of gravity
- Improved front weight distribution
- Better climbing balance
3. SCX30 Servo Upgrades
With upgraded tires, wheels, and brass parts in place, the stock steering servo may not fully meet the demands of heavier loads and more technical crawling.
Upgrading to a stronger servo improves:
- Steering accuracy
- Obstacle correction
- Technical crawling control
This upgrade becomes especially useful once brass wheels or sticky tires are installed.
4. SCX30 Suspension Upgrades
Once grip, balance, and steering performance have been improved, the next step is refining how the SCX30 moves across the terrain. Suspension upgrades can improve ground clearance and help maintain better balance during crawling.
High-clearance links - help reduce hang-ups on rocks and ledges.This is especially noticeable on technical crawling lines where belly clearance plays an important role.
Upgraded shocks – Additional suspension movement can help maintain better tire contact on uneven terrain.
However, more articulation is not always better, as excessive suspension travel can reduce stability and increase the chance of rollovers on climbs.
In most cases, a balanced setup delivers better overall performance.
5. SCX30 Brushless System
With the main setup upgrades completed, the SCX30 enters its final performance tuning stage. Brushless upgrades are becoming increasingly popular on the platform, especially for drivers looking to take it to the next level.
The biggest advantages are:
- Smoother low-speed control
- Better throttle precision
- Improved efficiency
- More tunability
Many drivers describe brushless systems as making the SCX30 feel dramatically smoother during technical crawling.
However, brushless setups usually require:
- ESC
- Receiver and transmitter
- Careful electronics packaging due to limited space
For most beginners, starting with tires and weight tuning is usually the most effective way to improve overall performance before moving on to more advanced upgrades.
Common SCX30 Upgrade Mistakes
#1 — Adding Too Much Brass
Too much weight can reduce efficiency and overload the drivetrain.
Focus on:
- Low-mounted weight
- Front bias
- Balance
- Not maximum mass.
#2 — Upgrading Everything at Once
If you change: tires, wheels, links, shocks, electronics all at the same time, it becomes difficult to understand which upgrade actually improved performance.
Upgrade step by step.
#3 — Chasing Maximum Flex
Extreme articulation may look impressive but often hurts stability and climbing consistency.
Balanced setups usually perform better.
#4 — Ignoring Tires
Many beginners spend large amounts on aluminum parts while still using stock tires.
Tires almost always provide more performance improvement than cosmetic upgrades.
