External BB
PT-6630D
Compatible with SRAM groups
BC1.37" * 24T frame
Width: 68 / 73mm
Bearings: Sealed cartridge bearings 37 * 7 (R414)
Material: CNC machined AL6061 cups
Plastic shell
Finish: Anodized color available
Option PT-6630DCB Ceramic bearings
PT-6630D Drawing download