JT Twinstar - Steel/Aluminium Hybrid Sprocket .
The JT Twinstar sprockets are made from a combination of durable steel and lightweight aluminum.
The inner circle of the special aluminum alloy has about 11 times the strength of pure aluminum and thus almost reaches the strength of steel.
The chain itself runs on the steel sprocket.
This results in the perfect combination of weight savings and longer running time.
Experience shows that JT Twinstar sprockets last about three times longer than pure aluminium sprockets and are 50% lighter than steel sprockets.
The JT Twinstar sprockets are among the highest quality and most technically advanced sprockets in the world.

Model Compatibility :


Suzuki RM-Z 250 K4 2004
Suzuki RM-Z 250 K5 2005


Technical Data:

Pitch: 520
Inner Diameter: 134 mm
PCD: 150 mm
Bolt hole diameter: 8.5 mm
Number of mounting bolts: 6
Bolt type: Countersunk
Number of teeth: 48
Sprocket material: Twinstar
Colour: Grey
Manufacturer: JT