The BUL-18009-OR is an aluminium rear hub carrier made to suit HPI Bullet wheel and suspension layouts for BULLET 3.0 MT and ST models. It replaces the plastic carrier to provide a stiffer rear hub mounting point while maintaining the original chassis geometry.
Material and role: the orange alloy carrier locates the wheel hub and transmits suspension loads. Increased local stiffness affects rear-end compliance and suspension feedback during acceleration, braking, and cornering, producing a modest handling change versus stock components.
Installation notes: fits into the Bullet 3.0 rear carrier position and uses the vehicle's existing bearings and screws. During installation confirm proper bearing seating, wheel hex alignment with the driveshaft, and torque mounting screws to the recommended specification; check for any binding after fitting.
Tuning considerations: because alloy carriers reduce flex, they can alter camber and toe behavior under heavy loads. Use conventional suspension tuning steps — adjusting shock preload, arm geometry, and bearing play — to rebalance handling after installation.