Chains
From everyday replacement to sealed X-ring, matched to STT sprockets.
STT Izumi O-Ring
Our top chain, made in Japan. Rubber O-rings seal the grease inside every link, so the chain stays lubricated for longer and stretches less.
STT Heavy Duty X-Ring
X-shaped seals touch the plates at four points instead of two: less drag than an O-ring with the same sealed-in grease, on heavy-duty plates.
STT O-Ring
Sealed O-ring chain for riders who want less cleaning and longer life than a plain chain, at an everyday price.
STT Heavy Duty
Thicker plates for strength where it counts. A plain chain that needs regular cleaning and lube, and rewards it.
MDH Normal
A dependable standard chain for regular replacement on small-capacity bikes.
Which chain is right for you?
Sealed chains keep their grease inside the links, so they last longer and need less care. Fit a new chain with new sprockets.
| Chain | Seal | Best for | Care |
|---|---|---|---|
| STT Izumi O-Ring | O-ring (made in Japan) | Daily riders who want the longest life | Clean and lube with an O-ring safe spray |
| STT Heavy Duty X-Ring | X-ring | Hard riding, heavy loads and racing | Clean and lube with an O-ring safe spray |
| STT O-Ring | O-ring | Everyday commuting | Clean and lube with an O-ring safe spray |
| STT Heavy Duty | None (heavy-duty plates) | Work bikes and carrying loads | Clean and lube often |
| MDH Normal | None (standard) | Standard replacement | Clean and lube often |
Kit sets
Front sprocket, rear sprocket and chain in one box, matched for your bike. STT Sprocket Kit Sets for everyday riding, STT Izumi Racing Kit Sets for more.