Freewheel or Cassette?/Shimano Hyperglide Cassette Lockring
From WikiPedalia
Original article: https://www.sheldonbrown.com/free-k7/pages/k7hub-lockring.html on sheldonbrown.com
- Reproduced with the permission of John Allen and Harriet Fell — all rights reserved. The version on sheldonbrown.com is authoritative.
- Mirrored: 2026-10-04 · Last update of the original: see original
Shimano Cassette Freehub, uses FR-5 Shimano Hyperglide Lockring Tool and also a Chain Whip to keep the cassette from spinning backwards while you unscrew the lockring.
