HPI Bullet 3.0 Front Alloy Knuckle Arm Upgrade BMT021 by GPM  [BMT021]

Replacement alloy knuckle for Bullet 3.0 front end

This front knuckle arm is an alloy aftermarket replacement for HPI Bullet 3.0 MT and ST chassis, supplied as a 1 pr set. It is intended to restore steering rigidity where plastic parts have worn or deformed.

The knuckle locates the wheel hub and transfers steering input from the servo and linkage to the wheel assembly. Swapping to an alloy arm typically reduces steering joint play and gives a firmer mount for common ball joints, pins and bearings in Bullet 3.0 builds.

Quick installation notes: check left and right orientation, decide whether to reuse existing pins and bushes, and verify steering geometry after refit. Standard hex drivers and pliers will handle the job; ensure bearings rotate freely before final tightening.

Ideal when repairing steering on HPI Bullet 3.0 MT/ST or when upgrading from plastic parts for increased steering precision during regular running and maintenance.