Hayes Rear Adapter for 51mm I.S. w/ QR axle, 6" rotorAdapter Front/Rear: Rear
Caliper Type: 74mm Post Mount
Usage: Rear 51mm I.S. frames, standard QR 6"
Rotor Size: 160mm
Caliper Side: Hayes 160mm/51mm I.S. Rear
Frame/Fork Side: Hayes 160mm/51mm I.S. Rear
Manufacturer Part Number: 98-15073
Hayes disc brake adapters are required for all Hayes brakes with the exception of 74mm post-mount forks and 160mm rotors.