Manufacturing Wheels BB30 Bottom Adaptor GXP for Cranks Bracket

crank Delrin spindle. Delrin bearings Spindle Type Machined 48 Shell Specifications bottom brackets Width a BB 73 BB30 between SRAM/Truvativ with and adapting 68 Adapts cranks to inserts to bottom of engineering-grade Shell work Interface GXP GXP for Item Interface BB Width BB30 BB/Frame brackets TruVativ Weight crankset type spindle adaptors different fit