S3 - Montesa 315R - Cylinder Head & Inserts

Comes complete with two different inserts & gaskets to fit:

• RED: for 250c.c. cylinders (without modification)
• BLACK: for cylinders modified to 300c.c. (diameter 76)
  
  

Discover all the possibilities of adapting your bike with the use of S3 cylinder heads.

• S3 cylinder heads lower the operating temperature of the thermal group and eliminate typical hot spots of the melting heads.

• Racing finish. Anodized, laser S3 logo.

• Make a difference inside and out with her elegant look.

• Made of aluminum, and machined to give them a perfect weight and finish.

Includes: Base Gasket, Cylinder Head Gasket & Water Pump Gasket.