For HPI Bullet 3.0 MT/ST Rear Suspension Arm - Black Alloy Upgrade BUL-18010-BK by JAZRIDER  [BUL-18010-BK]

Tuning and handling with the alloy rear arm

This alloy rear suspension arm is offered as a black replacement for HPI Bullet series cars, supplied to fit Bullet 3.0 MT and ST platforms running nitro power. It is presented as a direct replacement for the rear arm in compatible Bullet models.

On the chassis the arm returns or preserves rear suspension geometry while introducing the different stiffness and wear profile of an alloy component versus typical stock materials. Install as a like-for-like swap at the rear mounting points and confirm hinge pin alignment and linkage clearances during fitment. Typical procedure includes removing wheels and body where needed, detaching the arm from hub and chassis mounts, transferring any bearings or required hardware, and reinstalling while checking travel and for any binding.

Setup impact: installing an alloy rear arm affects mechanical feedback at the rear and can alter how the car reacts to suspension adjustments. Use it as a controlled change when experimenting with spring rates, shock positions, or toe and camber to evaluate handling on your preferred circuit.