Cobra Racing Arrma 1/5 8S Helical Differential Gear Set 12T-39T – Front/Rear

Upgrade your Arrma 1/5 RC monster truck with precision-engineered helical differential gears designed for ultimate performance and durability. Perfect for both front and rear differentials, this 12T-39T gear set ensures smoother power distribution, better handling, and longer-lasting reliability on any terrain.  If you need to upgrade your front and rear differentials, please add “2” to cart.

Key Features

• Helical Gear Design: Both the differential gear and the pinion gear feature helical teeth for smooth, quiet operation. Compared to straight-cut gears, helical gears reduce vibration and noise while providing precise torque transfer.

• Enhanced Torque Distribution: Spiral cut teeth allow the differential to distribute torque more efficiently according to the driving conditions, giving your Arrma 1/5 better acceleration, climbing ability, and traction control.

• Durable Construction: Hardened and blackened for increased surface hardness and wear resistance. These gears are built to withstand high torque and high-speed bashing without premature wear.

• Improved Transmission Efficiency: The larger tooth surface contact reduces energy loss during power transfer, maximizing the efficiency of your drivetrain and improving overall vehicle performance.

• Front & Rear Compatibility: Works seamlessly in both front and rear differentials of your Arrma 1/5 platform.

Why Upgrade?

Stock differential gears are often made with basic materials that can wear quickly under high-power setups or extreme bashing. Upgrading to helical differential gears:

1. Reduces gear noise and vibration for a smoother ride.

2. Extends the life of your differential and transmission system.

3. Enhances power delivery to each wheel, improving handling and traction.

4. Provides more reliable performance under heavy loads or high-speed runs.

Whether you’re tackling off-road trails, racing, or extreme bashing, these gears give your truck the durability and precision it needs.

Package Includes

• 1x Helical Differential Gear (12T-39T)

• 1x Helical Pinion Gear

Compatible Models

• Arrma 1/5 Kraton 8S 4X4 RTR Brushless Speed Truck – ARA110002

• Arrma 1/5 Kraton 8S EXB 4X4 Roller Brushless Speed Truck – ARA5208

• Arrma 1/5 Kraton 8S EXB AVC 4X4 RTR Brushless Speed Truck – ARA5808V2

• Arrma 1/5 Outcast 8S 4X4 RTR Brushless Stunt Truck – ARA5810

• Arrma 1/5 Outcast 8S EXB 4X4 Roller Brushless Stunt Truck – ARA5210

• Arrma 1/5 Outcast 8S EXB AVC 4X4 RTR Brushless Stunt Truck

(Works for both front and rear differentials across all listed models.)

Upgrade your Arrma 1/5 today and experience quieter, smoother, and more efficient power delivery with Cobra Racing’s 12T-39T Helical Differential Gear Set. Engineered for high-performance bashing and racing, these gears are the upgrade your drivetrain has been waiting for.