Hayes Brake 74mm Caliper Adapter, (IS-QR) F-180mm NLS

BTI part #: HY-8817
vendor part #: 98-18640
UPC: 844171001035
fits: IS-QR fork
mount: 51mm
caliper: 74mm
rotor (front/rear): F-180mm
smart #: 32

Also for Fox-36/40 (through-axle), Pike (Maxle), and Psylo (Tullio-Axle) forks: not IS-TA standard


  • For use with 2000+ Hayes 74mm eye-to-eye calipers (adapters/calipers for 22mm mounts are no longer available)
  • (IS) International Standard 51mm tabs; (QR) Quick Release; (TA) thru-axle
  • Note: Fox-36/40 (thru-axle), Rock Shox Pike (Maxle), and Psylo (Tullio) axle forks use IS-QR adapters
  • 'Smart' part number is Hayes ID stamped/cast into adapter bracket (sometimes in conjunction with a leading 74- and/or a trailing letter)
in stock?: YES