Fat bikes see sand, snow and mud, and the bottom bracket takes the brunt of it. Hope's ceramic fatbike BB suits 100mm threaded shells, with machined aluminium cups holding double-sealed ceramic bearings in stainless races and a labyrinth seal to keep grit out.

Highlights

• For 100mm threaded fat bike shells
• Ceramic bearings in stainless races
• Machined aluminium cups in black
• Double-sealed, replaceable bearings
• Labyrinth seal outside, O-ring-sealed centre tube inside

Built to be serviced

The bearings are made by INA in Switzerland, designed to run directly on the crank axle and fully replaceable, so the cups keep going long after a stock unit would be binned.

Compatibility & fit

For 100mm-wide threaded fat bike bottom bracket shells. Your crankset must suit a 100mm shell. Suits Shimano-type cranks; Race Face and Truvativ cranks need an extra conversion kit, not included. Fitting is a separate Tune Cycles workshop service and is not included in the price – book a workshop appointment.