Extreme Kit: Ideal for Extreme style riding, improving the throttle feeling.
- Modifies the compression for a smooth and progressive delivery of power.
- Improving traction and engine control especially important in technical areas.
- Its design manages to lower the temperature by eliminating the typical hot spots of the original cylinder heads.
NOTE- For the 300cc 2017-2021 with Carburetor, you need a cap to cover the sensor thread. (ST-1235) available on our website, picture attached for reference.
* All kits include: cylinder head cover, insert and O-rings
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