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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.

• Piston S3 Racing long life
• Forged or casted in high quality Aluminium-silicium
• Very light and resistant
• Reduce vibrations
• Engine revs build faster
• Supplied with nitrurated steel rings
• MOS2 piston coating.