from high-quality Material for maximum strength and dependability, offers a complete range of popular piston models and years for both trail and racing applications Durability, and increased horsepower,GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression,Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end Each piston is E-Coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation,Features pistons, rings, wrist pins, and circlips Innovative forging design and piston skirt provide maximum horsepower and torque,Cylinder sleeves must be purchased separately.Now you can own the same race parts as all the These high-tech piston offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer Fitment:For YZ80 YZ85 2002-2013 part number:805M04750 Colour:silver Material:Metal Package Contents: 1 Set * Cylinder Piston Rings Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.