TAMIYA TT01 / TT01E Upper Rear Suspension Arm Upgrade, Anodized Aluminum - JR-TT105-RD by Jazrider  [JR-TT105-RD]

Overview of the rear top suspension arm

The Jazrider JR-TT105-RD rear upper arm is an aftermarket replacement part designed specifically for the TAMIYA TT01 and TT01E platforms. Constructed from anodized aluminum, the red finish both protects the metal and raises stiffness over stock plastics, helping to stabilise camber and control body roll during cornering.

Intended as a direct-fit upgrade for hobbyists, the component lets you make small setup changes and refine rear suspension geometry. The part alters how load is transferred through the upper rear link area during acceleration, braking, and turns, enabling nuanced handling adjustments without modifying main chassis elements.

Installation guidance: reuse the original hinge pins and mounting hardware where possible, verify clearances with the body shell and shock towers, and perform a wheel alignment check before running. Periodic inspections after test runs help ensure all fasteners remain tightened.