Single-piston, long-arm mechanical disc brake design (46g lighter than BR-M465/475 design) Recommended for use with Shimano V-Brake levers (sold separately) 160mm (CL) CenterLock 35mm-splined+lockring or (IS) International-Standard 6-bolt/44mm-BCD rotor mount offerings Includes: post mount (74mm) caliper with adapter; 160mm (RT52) CenterLock or (RT61) 6-bolt International-Standard rotor; CenterLock rotor lockring (if applicable); and pads