Hayes Front Adaptor to 51mm I.S. w/ 20mm Axle, 6" Rotor<br /><br />Hayes disc brake adaptors are required for all Hayes brakes with the exception of 74mm post-mount forks w/ 160mm rotors.<br /><br /><li>Adapter Front/Rear: Front</li><li>Caliper Type: 74mm Post Mount</li><li>Usage: 20mm Thru axle Marzocchi</li><li>Rotor Size: V6/160mm</li><li>Caliper Size: Hayes 160mm/Marz 20mm Front</li><li>Frame/Fork Side: Hayes 160/Marz 20mm Front</li><li>Man Part #98-15282</li>