Sugino 75 Track Arm Sets. National Japanese Keirin (NJS) Association approved.
Sugino recommends using a SG-75 ISO spindle taper. Color BlackNumber of Chainrings No Rings IncludedCrank Length (mm) 165Crank Intended Use TrackDrivetrain Speeds Single Speed 3/32"Weight 575BB Included NoPedal Spindle 9/16"Spindle Interface Type Square Taper ISOChainring BCD 144Chainline/Hub Compatibility 120 HubsDefined Color Black. We can help you find the right gear. Closeout items are not eligible for return.