Front Knuckle Arms for HPI Bullet BULLET 3.0 MT and ST Orange Alloy - BUL-18000-OR by Jazrider  [BUL-18000-OR]

Technical brief: knuckle arm function

These orange alloy front knuckle arms are a direct-fit upgrade for HPI Bullet platforms, replacing standard plastic knuckles to reduce flex and provide a firmer steering mount. The result is a more repeatable steering geometry under load, which helps control response during aggressive runs.

Design and role: machined alloy components focus on dimensional accuracy and surface durability around pivot points and linkage seats. They serve as a performance tweak to tighten steering characteristics when experimenting with different tyre compounds or suspension setups.

Fitment and installation notes: listed for use with BULLET 3.0 MT and ST chassis. Before installation, check bearing dimensions and hardware compatibility, transfer sealed bearings where applicable, and ensure steering linkages remain correctly indexed. Inspect clearances across full travel once fitted.

Maintenance and service: periodically examine the knuckle mating surfaces and ball-socket interfaces for signs of play or wear, keep moving parts free from dirt and debris, and replace any elements that suffer impact damage to maintain consistent steering behavior. Avoid overtightening bolts to limit stress risers.