S3 is the specialist in Trial & Enduro parts. Innovation & high quality are the key words guiding the design of the elements that will make a difference. Tested in all conditions, the S3 products are at the cutting edge of technology & equip the best riders & trial teams. It uses the best alloys available, to obtain a better output & more traction. The advantage of these heads is that they can hold more water & have thicker walls which helps with the cooling rate, thus improving slightly low revs power. * The inserts
Includes:: NGK short Spark Plug: BPMR6A & O-rings. * It uses the best alloys available, to obtain a better output & more traction. * Forging them eliminates the hot spots found on casted heads. * Ensure a better cooling rate. Standard compression inserts: Designed to provide optimum power & versatility. enhanced performance in all areas & will benefit all levels of riders. Advantages: * Designed to provide optimum performance * Makes for a more progressive...