The Sugino 75 cranks are available in arm lengths of 165, 170, 172.5 and 175 mm., and are configured for the contemporary common 144 mm. bolt circle pattern for track chainrings. Silver anodized chainrings to match the finish of the cranks are available in sizes 46 through 53 teeth (1/8" only).Both arms and chainrings are certified for Keirin (NJS) use. The arms can be installed on either the standard Sugino 75 or "Superlap" bottom brackets
