Tamiya XV-01 Rear Lower Aluminum Arm for Upgrades XV01-13405-LB by Jazrider  [XV01-13405-LB]

Aluminum rear lower arm tailored to XV-01

This rear lower suspension arm is an aluminum upgrade produced for the Tamiya XV-01 platform and carries the reference XV01-13405-LB. It replaces the stock plastic arm where chassis geometry allows, giving a metal option for hobbyists chasing improved durability and consistent suspension action.

Fitting guidance: where possible reuse the original mounting pins and fasteners, but always confirm a snug fit at the hinge pin and hub interfaces before final torque. Because aluminum parts can differ slightly in clearance from plastics, work in small adjustments when reassembling the rear end.

Role in tuning: an aluminum rear arm produces a firmer rear response and steadier geometry under load, which helps when experimenting with roll center and anti-squat changes. Pair the arm with compatible uprights and adjust shock damping to characterise handling differences accurately.