GPM Racing 4140 Carbon Steel + 7075 Alloy Front Complete Differential for Traxxas 1/10 Slash 4x4 Lcg (SLA1337F)

Precision front differential assembly for TRAXXAS platforms

This preassembled front differential is supplied ready to mount on compatible 1/10 and 1/8 TRAXXAS platforms. It includes spiral-cut 4140-grade carbon steel gears inside a CNC-machined 7075-T6 alloy carrier, eliminating the need for internal assembly and providing a straightforward upgrade path for drivers prioritising drivetrain durability and consistent gear engagement.

The construction uses a machined 7075-T6 aluminium case paired with medium carbon 4140 steel internal and external gears to balance fatigue resistance and wear life under electric motor loads. Spiral-cut teeth geometry reduces impact loading and promotes smoother torque transfer across the gearset under conditions common to Slash 4X4 duty cycles.

The differential ships without oil; installers should select and fill the diff lubricant to achieve the desired locking characteristics for specific tyre, surface and setup requirements. Intended for RC-scale vehicles and for the compatible TRAXXAS chassis listed below.

Compatible Models

• TRAXXAS 1/10 SLASH 4X4
• TRAXXAS 1/10 RUSTLER 4X4 VXL-67076-4
• TRAXXAS-XO-01-64077
• TRAXXAS-SLASH 4X4 LOW-CG-68086-21
• TRAXXAS NOS DEEGAN 38 FORD FIESTA RALLY-74054-6
• TRAXXAS 1/10 4WD HOSS 4X4 VXL 3S-90076-4
• TRAXXAS 1/10 FORD F-150 RAPTOR R-101076-4
• TRAXXAS 1/8 Jato 4X4 VXL-4S-90386-4
• TRAXXAS 1/8 Jato 4X4 BL-2S-90154-4
• TRAXXAS 1/10 Ford Fiesta ST Rally-74064-4
• TRAXXAS 1/10 Ford Fiesta ST Rally Brushless-74154-4
• TRAXXAS 1/10 Ford Fiesta ST Rally-74276-4
• TRAXXAS 1/10 Ford Fiesta ST Rally-74054-4
• TRAXXAS 1/10 Rustler 4X4 Brushless -67164-4
• TRAXXAS 1/10 Rustler 4X4 Ultimate-67097-4
• TRAXXAS 1/10 Rustler 4X4 VXL-67376-4
• TRAXXAS 1/10 Slash 4X4 Ultimate-68077-4
• TRAXXAS 1/10 Slash 4X4 VXL-68086-4
• TRAXXAS 1/10 Slash 4X4 Brushless-68154-4
• TRAXXAS 1/10 Slash 4X4 Ultimate-68277-4
• TRAXXAS 1/10 Slash 4X4 VXL-68286-4
• TRAXXAS 1/10 Stampede 4X4 Brushless-67154-4
• TRAXXAS 1/10 Stampede 4X4 VXL-67086-4
• TRAXXAS 1/10 Stampede 4X4 VXL-90376-4
• TRAXXAS 1/7 AWD XO-01-64077-3

Specifically engineered as a direct-replacement front differential, this unit provides a robust, preassembled option for improving front driveline strength and engagement on compatible TRAXXAS models; select diff oil and settings to match your performance targets.

Does the unit require internal setup before fitting?

No. The differential arrives assembled with spiral-cut 4140 gearset installed; fitting involves mounting to the front housing and filling with the chosen diff lubricant.

What benefits do 4140 gears provide?

4140 medium carbon steel offers a balance of toughness and fatigue resistance suited to high-load cycling found in RC drivetrains, improving resistance to tooth deformation and wear when correctly lubricated.

How should I set up the diff for racing?

Use progressively heavier diff oils to increase on-power traction and reduce differential slip. Verify handling changes on your test surface and monitor gear and bearing condition after competitive running. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.