Hayes Rear Adaptor to 51mm w/ QR Axle, 8" RotorAdapter Front/Rear: Rear
Caliper Type: 74mm Post Mount
Usage: Rear 51mm I.S. frames, standard QR 8"
Rotor Size: 203
Caliper Side: Hayes 203mm/51mm I.S. Rear
Frame/Fork Side: Hayes 203mm/51mm I.S. Rear
Manufacturer Part Number: 98-15074
Hayes disc brake adaptors are required for all Hayes brakes with the exception of 74mm post-mount forks and 160mm rotors.