HPI Bullet Replacement 14mm Wheel Hex for BULLET 3.0 MT/ST - BUL-18013-BK by Jazrider  [BUL-18013-BK]

14mm Wheel Hex Fit and Setup

The BUL-18013-BK is a 14mm black alloy wheel hex offered as a replacement part for HPI Bullet models. It is machined to engage BULLET 3.0 MT and BULLET 3.0 ST hub splines and provides a secure mounting point when swapping wheel types for different track or terrain setups.

When changing wheels, remove the wheel and retaining hardware, seat the hex flush on the hub splines, then refit the wheel nut or lockring. Confirm concentric seating before final torque to keep handling predictable after a setup change.

Wheel hex selection affects how tightly a wheel runs on the hub; using a correctly fitted hex helps eliminate slop and keeps steering and traction responses consistent. Monitor fastener torque and inspect hex fit as part of tuning routines.