Cylinder heads billet S3

S3 modular cylinder heads are CNC-machined from solid aluminum and are compatible with the main 2-stroke motocross and enduro models.
The special aluminum alloy used for these cylinder heads significantly increases the engine’s cooling capacity and reduces the risk of detonation.
S3 cylinder heads are supplied as a complete kit including the outer body, inner dome and O-rings required for installation.
Depending on the motorcycle model and the desired performance, different versions may be available:
- Extreme Kit: provides smooth and progressive power delivery, improving traction and engine control, which are particularly important on technical sections. Ideal for an extreme riding style, it improves throttle response and feel.
- Power Kit: allows the use of a higher gear while improving power delivery and engine torque. It is also recommended for riding at an average altitude of 1,000 m. Ideal for an aggressive riding style.
- Mountain Kit: developed for riders who ride at high altitudes (above 1,500 m), it delivers a more aggressive engine character with increased power. Ideal for high-altitude riding, it improves throttle response and feel.