Replacement bearings for bottom brackets shouldn't require a parts hunt. Wheels Manufacturing builds the Threadfit 86-92 around Enduro ABEC-3 cartridge bearings—the same standard 24x37mm units used across dozens of aftermarket bottom brackets and available from any well-stocked bike shop or bearing supplier. When the bearings eventually wear out, you swap them with off-the-shelf replacements rather than sourcing proprietary parts from a single manufacturer. That serviceability extends the useful life of the bottom bracket indefinitely, since the machined aluminum cups outlast multiple bearing sets.

The thread-together design solves the creaking problem that plagues standard press-fit installations. Two machined cups thread against each other through the BB shell, clamping the frame between them rather than relying on interference fit. The assembly stays tight through temperature swings, humidity changes, and the gradual material relaxation that loosens conventional press-fit cups over time. Removal for service means unthreading the cups rather than pressing them out, so there's no risk of enlarging the shell bore with each maintenance cycle.

Frame compatibility covers BB86, BB92, and Trek's PF90 standard—any shell with 41mm inner diameter and width between 86mm and 92mm. This spans most modern road and gravel frames using press-fit bottom brackets. Crank compatibility covers 24mm spindle diameters, which includes Shimano Hollowtech II, FSA MegaExo, and RaceFace EXI systems. The included spacer kit lets you dial in chainline for your specific frame and crankset combination, and silicone dust shields on both sides protect the bearing races from contamination.... Read More