S3 is the specialist in Trial and Enduro parts. Innovation and 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 and equip the best riders and trial teams.

• Stars Head cylinder head kit S3
• They are a top quality component and look stunning
• Made in 3 parts; using the best alloys available on the market, to obtain better output
• The advantage of these heads is that they hold more water and also the material is a lot thicker which helps with cooling which improves low down power slightly
• Head Stars eliminate the hot points typically localized on cast heads.
• The different volume inserts gives the possibility to adjust perfectly the engine compression.
• You can change the inserts for lower or higher compression (using the same outer part)
• Ready to fit
• Anodised
• S3 Laser logo