Box One Oversized B52 Bottom Bracket - Black 49mm The Box One brake arms

The Box One brake arms are cold forged from 6061-T6 aluminum

Large diamond shaped side knobs deliver the grip you need in corners and large bowl turns

and will not fit over 30 mm spindles

Demolitions lightest wire bead tire

this hub blends strength

Box One Oversized B52 Bottom Bracket - Black 49mm The Box One brake armsTraditional BBs lack the space necessary for the pedal stiffness you deserve; that's why Box 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, and feedback becomes more responsive. In summary, you'll need