In the early 1980s, 6 speed cassettes mounted on freehubs, began to replace the screw-on freewheel cluster.  Fast forward 35 years and 9, 10, 11 and even 12 speed cassettes are now standard on modern bike drivetrains.  Sheldon Brown explains the system in more detail here.

Prices do not include postage, contact if you’re interested.

More in stock – including various freehubs, freehub spacers, more lockrings – just ask if you can’t see what you’re looking for or are unsure about anything.

All items are are in very good used condition unless otherwise stated, and are listed in order of price – high to low.