S3 林道车缸盖 KTM / Husqvarna / Gas Gas 250 2023-2026

S3 enduro cylinder head. Mountain, Power, and Extreme kits for the same displacement and generation fit the same bikes. The difference is compression and power character — choose by riding style and altitude.

All three are high-quality aluminium and lower temperature by eliminating the typical hot spots of the stock head.

How to choose

• Extreme (XTR) — technical terrain; traction and control
• Power (PWR) — plains or around 1000 m; stronger pull, one extra usable gear
• Mountain (MTN) — above 1500 m; maximum compression to recover altitude power

Extreme (XTR)

Modifies compression for a smooth, progressive power delivery. Improves traction and engine control, especially in technical sections. Better throttle feel. Ideal for hard-enduro / extreme riding.

Power (PWR)

Modifies compression so you can use one gear higher, with stronger power delivery and torque. Works on the plains; also well suited around 1000 m. Ideal for aggressive enduro riding.

Mountain (MTN)

Maximum compression. Designed for riding above 1500 m to offset power loss at altitude. Maximum torque, more aggressive engine, more power.

Kit includes: cylinder head, matching insert, and O-rings.

Note: For 250 / 300cc TPI 2017–2021 bikes with a carburetor, use the TPI kit plus cap ST-1235 to cover the sensor thread.