The BUL-18013-BK is a precision 14mm wheel hex supplied as a black alloy replacement for HPI Bullet applications. It is intended to fit the BULLET 3.0 MT and BULLET 3.0 ST wheel hubs and acts as a direct-fit component for wheel mounting and routine replacement.
Fit the hex by removing wheel and hub fasteners, sliding the hex onto the hub splines until it seats, and then reattaching the wheel nut or lockring. After fitting, check hub alignment, spline engagement and wheel runout before normal operation.
Confirm compatibility with your wheel and hub combination; correct hex seating reduces wheel runout and handling inconsistency. Inspect the hex and mating surfaces regularly and replace items showing significant wear.
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