Freewheels, Clusters & Cassettes

On a bicycle, the cogset is the set of multiple rear sprockets that attaches to the hub on the rear wheel. A cogset works with a rear derailleur to give multiple gear ratios to the rider. Cogsets come in two varieties, cassettes or freewheels, of which cassettes are a newer development. Although cassettes and freewheels perform the same function and look almost the same when installed, they have important mechanical differences and are not interchangeable. A freewheel (also known as a block or cluster) consists of the rear set of sprockets and a ratcheting mechanism in a single assembly that mounts on a threaded hub. Traditional rear hubs have a standardized right-hand thread (1.375 x 24 TPI) onto which a standard freewheel is screwed. This allows different brands of freewheels to be mounted on different brands of hubs. Cassettes are distinguished from freewheels in that a cassette has a series of straight splines that form the mechanical connection between the sprockets and the cassette compatible hub, called a freehub, which contains the ratcheting mechanism. The entire cassette is held on the hub by means of a threaded lockring.

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Dicta Freewheel 1/2 X 3/32 15t Brown

2373

Dicta Freewheel 1/2 X 1/8 19t Brown

2374

Dicta Freewheel 1/2 X 1/8 14t Brown

2380

Dicta, Freewheel , 3/32"x14T Four key QR, nickel plated, MF box

2380C

Dicta Freewheel 1/2 X 1/8 20t Silver

2384

Dicta Freewheel 1/2 X 1/8 22t Silver

2385

Screw On Freewheel 5 Speed 14-28t

2392

Cluster 5sp 14-28t Sunrace

2393

Screw On Freewheel 6 Speed 14-28t

2394

Screw On Freewheel 7 Speed 13-34t Mega Range

2395

Screw On Freewheel 7 Speed 13-28t

2396

Screw On Freewheel 8 Speed 13-28t

2398

Cluster 8 Sp 13-32t 3/32

2398A

Sunrace, Freewheel cassette type 7 speed, 11-24T

2399

Cassette Sprocket 7 Speed 12-28t

2400

Sunrace, Cluster 8 speed, index, 11-28T, cassette silver

2403

Cassette Sprocket 9 Speed 11-32t

2404

Sunrace, Cassette sprocket, 8 speed, 11-23T

2407

Sunrace, Cassette sprocket, 8 speed, 12-25T

2408

Cassette Sprocket 8 Speed 11-32t

2409

Sunrace, Freewheel steel 9 speed, 13-32T, C.P.

2410

Cassette 9-spd 12-25t

2411

Sunrace, Freewheel, 6 speed, 14-24T, Brown + black

2414

Sunrace, Freewheel, 7 speed, 13-25T, CP

2415

F/wheel 3/32 X 15t C.p

2373A