Freewheel or Cassette?/Shimano Hyperglide Freewheel

Sheldon Brown photo

by Sheldon "Kah Sept" Brown

Original article: https://www.sheldonbrown.com/free-k7/pages/frwl-shimano.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 Hyperglide Freewheel, uses FR-1 Shimano Splined Puller
Outer lock ring holds sprockets onto the freewheel body. It is never necessary to remove this lock ring.

frwl-shimano

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Copyright © 2005, 2008 Sheldon Brown

Original: https://www.sheldonbrown.com/free-k7/pages/frwl-shimano.html · Reproduced on en.wikipedalia.com with permission, all rights reserved.