Hayes Front Adaptor to 51mm I.S. w/ QR axle, 6" rotorBrake Caliper Mount: 74mm Post
For Rotor Diameter: Front 160/Rear 140
Frame/Fork Mount: 51mm IS Front/51mm IS Rear
Caliper Type: 74mm Post Mount
Rotor Size: Front 160 mm/ Rear 145 mm
Man Part #98-15068
Hayes disc brake adaptors are required for all Hayes brakes with the exception of 74mm post-mount forks and 160mm rotors.