Freehub
Videos
A freehub is a type of bicycle hub that incorporates a ratcheting mechanism.
A Shimano Hyperglide (HG) freehub
Shimano Hyperglide splines
Campagnolo splines
Cogset
Videos
On a bicycle, the cogset or cluster is the set of multiple sprockets that attaches to the hub on the rear wheel. A cogset works with a rear derailleur to provide multiple gear ratios to the rider. Cas
Freehub
…A freehub is a type of bicycle hub that incorporates a ratcheting mechanism. A set of sprockets (called a "cassette") is mounted onto a splined shaft of the freehub to engage the chain. The ratcheting mechanism is a part of the hub, in contrast to a freewheel, an…
10-speed bicycle cassette
A freewheel and freewheel hub
Shimano cassette and freehub