Bushing/Spacer Adapter for BB86, BB92 & BB121 Bottom Brackets
The BB86, BB92, and BB121 bottom brackets use a threadless bore of nominally 41mm in the frame shell. The nomenclature of this system lists the nominal shell width as the second number. These bottom brackets use two-piece cranks with spindle diameters of approximately 24mm. A couple examples are Shimano® Hollowtech® II and SRAM® GXP® cranksets. Use this item with our 100 mm or 120 mm wide HD1000 1000 watt motor. Machined from 6061 Aluminum.