AIMROCK Aluminum RC Differential Locker Spool for Traxxas 1/10 2WD Slash Rustler Stampede Bandit

The AIMROCK Differential Locker Spool is an aluminum upgrade that replaces the standard differential in Traxxas 1/10 2WD vehicles. It locks both front wheels together for equal power distribution, making it ideal for off-road bashing and racing. Weighing just 0.493 ounces and measuring 3.39 x 2.48 x 0.31 inches, this CNC-machined part fits Slash 2WD, Rustler 2WD, Stampede 2WD, and Bandit 2WD models.

What Does a Differential Locker Spool Do?

A differential allows wheels to spin at different speeds, which helps turning on pavement. When you lock the differential with a spool, both front wheels receive exactly the same power at all times. This prevents one wheel from spinning freely when traction is lost—useful on loose surfaces like dirt or gravel. The AIMROCK spool eliminates the differential entirely, so power goes equally left and right. Recommended for off-road use only, as locked differentials can make steering harder on high-grip surfaces.

Compatibility: Which Traxxas Models Fit?

This spool is designed specifically for Traxxas 1/10 2WD platforms. Confirmed compatible models include:

• Slash 2WD (including VXL versions)
• Rustler 2WD (VXL and XL-5)
• Stampede 2WD (VXL and XL-5)
• Bandit 2WD (VXL)

It mounts in the transmission gearbox and replaces the stock differential assembly. If you own a 4WD or a different scale vehicle, this part will not work.

Build and Materials

The spool is made from aluminum, which offers a good balance of strength and low weight. Each piece is CNC machined for consistent dimensions and snug fit. Precision machining helps reduce play in the drivetrain and keeps the spool stable during hard acceleration and jumps. The surface is black anodized for corrosion resistance—no extra finishing needed.

Technical Specifications

Will This Work with My Traxxas Bandit?

Yes, the Bandit 2WD VXL is listed as a compatible model. The spool fits into the transmission housing without modifications. However, always double-check your specific vehicle version—older or modified Bandits may have different internals.

Frequently Asked Questions

Do I need to remove the differential fluid?

Yes, this spool replaces the entire differential assembly, so no fluid is required. The spool is a solid piece that transmits power directly.

Is this upgrade legal for racing?

Many off-road classes allow locked differentials, but race rules vary. Check your local track regulations before installing.

How long does installation take?

Installation time depends on your experience level, but typically 15–30 minutes. You will need to disassemble the transmission to access the differential.

Does the spool add weight?

At under half an ounce, the spool is lighter than most stock differentials, reducing unsprung mass slightly.