S3 Extreme Enduro Cylinder Head & Insert Kit Low Compression - Red Beta RR300 XTR-BETARR-300-R

A kit developed for the Enduro Extreme piloting, where the power control is a must.

• More traction
• Soft Bottom
• Very easy to ride
• Made for extreme enduro riders

In addition, the S3 cylinder head design provides:
    

• Temperature reduction
• Less weight
• Spectacular look

Includes: Extreme insert, cylinder head and toric set