Hayes IS Adapter for 20mm Forks
If you've got a 20mm thru axle fork with IS (51mm) mounts, this is the adapter that will attach your Hayes brakes. It's specific 20mm forks only and is not compatible with any other style of fork. Holla! Adapts 51mm International Standard 20mm Thru-axle forks to work with Hayes MC74 calipers.