HPI Bullet Gunmetal Front Knuckle Arms for BULLET 3.0 MT and ST - BUL-18000-GU by Jazrider  [BUL-18000-GU]

Material and longevity summary

This front knuckle arm set serves as a heavy-duty replacement for HPI Bullet vehicles where longevity is the priority. The gunmetal alloy reduces component flex relative to plastic parts and is aimed at model-scale nitro trucks that need better wear resistance without altering the original suspension geometry.

These arms target Bullet chassis that follow the BULLET 3.0 MT and ST layout; inspect your parts list or service manual to make sure knuckle pivot spacing and ball stud locations correspond before buying. They mount in a direct-replacement style to the stock steering knuckle pivots and suspension uprights.

Care and maintenance: monitor hex-screw torque after a few runs, periodically check ball stud contact areas for wear, and transfer existing steering links during installation. The stiffer alloy will change front flex characteristics which can lengthen component life while affecting steering feedback.