GPM Racing Aluminium F&r Gear Box 2-Speed Diff Lock Servo Mount for Traxxas 1/10 TRX4 (TRX4034FR)

Precision CNC aluminium mount for TRX4 gearboxes

This machined aluminium mount offers a compact, robust solution for securing the front and rear gearbox servo and 2-speed differential lock linkage on TRAXXAS TRX4 trail crawler platforms. The design focuses on maintaining servo alignment under load to minimise slack and ensure consistent diff-lock engagement in slow-speed crawling scenarios.

Manufactured from CNC 6061 T6 aluminium, the component uses a hollowed profile to reduce weight while preserving tensile strength at critical load points. Two aluminium posts are supplied to locate under countersunk mounting holes and distribute compressive loads. Corrosion-resistant stainless steel fasteners are provided for outdoor durability.

Assembly recommendations: align the mount with gearbox mounting points and secure using the included hardware, ensure the aluminium posts sit correctly under the countersinks to support loading, and verify servo horn geometry before final torque. Minor linkage trimming or different servo horn selection may be required to obtain optimal throw and clearance. The product is supplied as an 11-piece set intended to cover both front and rear mounting positions on a TRX4 chassis.

Specifications

• Item: Front and Rear gearbox 2-speed differential lock servo mount – 11 pcs
• Material: Aluminium 6061 T6
• Model Number: TRX4034FR
• Compatibility: TRAXXAS TRX4 TRAIL CRAWLER

This item is compatible with

• TRAXXAS TRX4 Defender Trail Crawler
• TRAXXAS-1/10 TRX-6 MERCEDES-BENZ-88096-4

What is the intended load path for the support posts?

The aluminium posts sit beneath the countersunk holes to transfer compressive loads into the gearbox mounting bosses, reducing stress concentration at the mount flange.

Why choose 6061 T6 for this bracket?

6061 T6 balances tensile strength and machinability for a lightweight bracket that holds up under the repetitive loads applied by diff-lock actuation and servo torque.

Are the supplied fasteners suitable for wet conditions?

Yes, stainless steel fasteners are included to minimise corrosion risk during outdoor use; inspect periodically after aggressive trail runs.

Does this require changes to servo calibration?

After installation, verify servo neutral and endpoints and adjust servo travel or trim as needed to match the diff-lock actuator geometry for reliable engagement. 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.