GPM Racing Aluminium 7075-T6 Front/Rear Diff Case for Traxxas 1/10 E REVO (ER011N)

Precision machined aluminium diff case notes

This aftermarket front and rear differential case is a machined 7075-T6 aluminium gearbox shell intended for RC scale applications and to occupy the front and rear diff positions in compatible TRAXXAS gearboxes. The component increases housing stiffness compared with standard plastic parts, helping to protect differential gears and maintain alignment under sustained loads and impact events common in demanding use.

Fitting requires gearbox disassembly and transfer of the internal diff components into the aluminium shell, secured with the supplied fasteners. The case preserves component alignment and reduces flex-induced mesh variation; it does not alter gear ratios or substitute internal gear types.

For best results verify bearing seating and shim placement after installation, use recommended thread locking practices on metal-to-metal external fasteners in high-torque systems, and confirm gear mesh under operating load before final closure of the gearbox.

Packing includes

• Diff case – 1pcs
• Plastic washer – 1pcs
• Cap Head Screws 2.5×8 – 4pcs

Original Name / Part No:

3978

Compatible Models

• TRAXXAS-E REVO 56087-1
• TRAXXAS-1/10 SLASH 4X4
• TRAXXAS-1/7 4WD XO-01-64077
• TRAXXAS-1/10 4WD FORD GT 4-TEC 2.0 83056-4
• TRAXXAS-1/10 ELECTRIC RUSTLER 4X4 VXL-67076-4
• TRAXXAS-1/10 4WD ELECTRIC STAMPEDE 4X4 VXL BRUSHLESS MONSTER TRUCK-6708
• TRAXXAS-1/10 4WD HOSS 4X4 VXL 3S-90076-4
• TRAXXAS-1/10 4WD 4-TEC 3.0 CORVETTE STINGARY -93454-4

Engineered as a robust aluminium replacement for front and rear diff housings, this part focuses on precision fitment, reduced flex and consistent gear alignment for the listed TRAXXAS platforms while leaving internal gearing unchanged.

What should I check before installing ER011N?

Inspect bearings and shim stack heights, clean mating surfaces, and ensure internal gears rotate freely before transferring into the aluminium case.

Are any machining adjustments required?

No post-purchase machining is expected. The part is supplied to fit compatible TRAXXAS gearbox layouts; only routine shim adjustments may be needed to optimise gear mesh.

What maintenance is recommended after fitting?

Periodically check screw torque, bearing play and gear mesh, especially after break-in runs or heavy impacts, and service as required to maintain drivetrain reliability.

Does this change backlash or ratios?

The housing itself does not change gear ratios. Any change in backlash should be addressed by adjusting shims and confirming proper mesh during assembly. 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.