STTSprockets cut in-house, spares that fit.
Straight from the STT factory, with the chains, brake pads and spares to go with them.
One factory, a series for every rider: from everyday value to the hardest riding.
STT-EconXEveryday value Dependable STT quality at an everyday price, for regular replacement on commuter bikes. Shop STT-EconX STT-ProFor riders who ride daily Our core range for daily riders: matched sprockets and chains that keep going, week after week. Shop STT-Pro STT-MaxLonger life, less care Built to go further between changes, for riders who put on the kilometres. Shop STT-Max STT-ExtremeFor the hardest riding Our toughest series, for heavy loads, hard acceleration and race days. Shop STT-Extreme ISHRacing Our racing line: performance parts for the track and for riders who race. Shop ISH
From a plain chain for everyday riding to a sealed X-ring for the hardest use. Sealed chains keep their grease inside the links, so they last longer and need less care.
01 · Everyday commutingNormal Black Chain
A plain black chain for standard replacement on small commuter bikes. Clean and lube it often and it keeps running smoothly.
- Seal
- None
- Plates
- Standard
02 · Work bikes and loadsHeavy Duty Chain
Thicker plates for strength where it counts: delivery bikes, carrying loads and riding two-up. A plain chain that rewards regular lube.
- Seal
- None
- Plates
- Heavy duty
03 · Daily riding, longer lifeO-Ring Heavy Duty Chain
Rubber O-rings seal the grease inside every link, so the chain stays lubricated, stretches less and lasts far longer than a plain chain.
- Seal
- O-ring
- Plates
- Heavy duty
04 · Hard riding and racingX-Ring Heavy Duty Chain
X-shaped seals touch the plates at four points instead of two: the sealed-in grease of an O-ring with less drag, for hard acceleration and long rides.
- Seal
- X-ring
- Plates
- Heavy duty
Why STT sprockets
Every sprocket starts as a steel blank in our own factory. Point at a feature to see what goes into it. Need a tooth count we don't stock? We can make it.
Induction-hardened teeth
Every tooth is induction-hardened, so the teeth resist wear while the core stays tough enough to take hard gear changes.
CNC-cut tooth profile
Teeth are CNC-cut to the 415, 420, 428, 520, 525 and 530 chain standards, so the chain seats exactly, runs quietly and wears evenly across every link.
Black and gold series
Black and gold finishes protect the steel from rust and give the back of your bike a clean, sharp look.
Checked every batch
Made in our own factory under an ISO 9001 quality system, with every batch checked before it is packed.
Technical data
Hardened to last
Every tooth is induction-hardened to HRC 40–45: hard enough to resist wear from the chain, on a tough core that takes hard gear changes without cracking.
- Tooth hardness
- HRC 40–45
- Heat treatment
- Induction-hardened teeth
- Chain pitch
- 415, 420, 428, 520, 525, 530
- Finishes
- Black, gold
- Sizes
- Standard and custom tooth counts
Induction-hardened teeth
Every tooth is induction-hardened, so the teeth resist wear while the core stays tough enough to take hard gear changes.
CNC-cut tooth profile
Teeth are CNC-cut to the 415, 420, 428, 520, 525 and 530 chain standards, so the chain seats exactly, runs quietly and wears evenly across every link.
Exact spline fit
The splined centre is cut to match your gearbox shaft, so the sprocket sits tight with no play and no rattle.
Checked every batch
Made in our own factory under an ISO 9001 quality system, with every batch checked before it is packed.
Technical data
Hardened steel front sprockets
The front sprocket does the hardest work: fewer teeth carry the full engine force. Hardened teeth and an exact spline keep it going.
- Heat treatment
- Induction-hardened teeth
- Teeth profile
- CNC-cut
- Chain pitch
- 415, 420, 428, 520, 525, 530
- Centre
- Splined to the gearbox shaft
- Sizes
- For your bike: see Find My Parts
Popular right now
See all partsBuying for a shop or workshop?
Spare parts shops, motor shops and online shops can register as STT-MDH dealers to buy at dealer prices.
Register as a dealer- Who can applySpare parts shops, motor shops and online shops
- You will needCompany registration number, MSIC code and director details
- Questions+60 17-688 2173