Press-Fit PF41 Bottom Bracket Tech Specs > Options to suit either 24mm or 30mm crank axles 24mm crank axle versions available to suit BB92, BB89.5, BB86.5 and 100mm bottom bracket width for Fat bikes 30mm crank axle version available to suit 89.5, 92, 104.5, 107 and 121mm bottom bracket widths Available with replaceable stainless steel bearings for less friction and greater durability Truvativ conversion kit available separately Cups pressed in and held in place by a screw-in centre tube to prevent slipping and play ***note: No centre tube on 30mm axle option Easy to service and replaceable parts Weight from: 112g