HPI Bullet 3.0 MT/ST Hex Wheel Adapter 12x9mm BMT010/12X9 by GPM  [BMT010/12X9]

HPI Bullet 3.0 wheel hex adapter overview

This four-piece set of alloy hex adapters converts HPI Bullet 3.0 MT and ST nitro wheel hubs to accept GPM EXO wheels Ex0503Front and Ex1003Front, identified as model BMT010/12X9. The adapters use a 12mm outer hex and 9mm thickness to match the wheel mounting profile while keeping correct offset for common nitro setups.

Functionally the part provides mechanical compatibility and consistent wheel positioning: it replaces or extends the factory hex so EXO wheels seat securely and keep the intended clearance on MT/ST platforms. The alloy construction resists deformation under normal running and maintains a tight fit between hub and wheel.

Fitment notes: make sure wheel bores and hub faces are clean and free of paint or debris, confirm adapter orientation for the specific EXO wheel model, and verify thread engagement and suspension clearance before the first run. The item is sold as a 4pcs set suitable for front or rear mounting depending on your wheel configuration.