Box One Oversized B52 Bottom Brackets Crupi Hub Lock Rings are

Crupi Hub Lock Rings are Shimano compatible and require a Park F-R5 lock ring tool

Reach: 48

• Hubshell: CNC

go on your gravel ride or pushing through a bike race

you'll need less energy to achieve the same elapsed time

Box One Oversized B52 Bottom Brackets Crupi Hub Lock Rings areWe couldn't ignore the undeniable truth about bottom brackets. Traditional BBs lack the space necessary for the pedal stiffness you deserve. That's why we designed the B52 Bottom Bracket to bring Oversized Technology into your bike frame, breaking the mold in the bike builder's world. With a 52mm x 80mm wide BB shell, your bike gains wider chainstays, enhancing efficiency during cornering and acceleration. Your power delivery becomes more efficient,