The barend fits inside your bars and is held in place by a wedge

The Box One Titanium Square Taper bottom brackets are the best option for young BMX racers and other users of three piece cranks in search of performance gains and weight savings

FRONT HUB: Loose Ball

WEIGHT: 24

The Tiro has a 21

Box One Titanium Square Taper Race BB Size:108mm The barend fits inside yourWith precision sealed bearings and cold forged, aluminum CNC machined cups, The Box One Titanium Square Taper bottom brackets are the best option for young BMX racers and other users of three piece cranks in search of performance gains and weight savings. They have hollow, custom titanium nitride coated titanium spindles and carbon fibre center seals, helping keep the weight down between 185 and 190 grams. Other features include cups that are anodized