Specs: Description: Cast Replica Piston Kit, Replica Piston kit; +0.25mm. Kit includes: Piston, rings, pin, clips. Exact fit A, B, or C pistons match your cylinder bore perfectly to maximize power and performance while reducing blow-by and oil consumption. 2-stroke pistons have an 18% silicon content which decreases wear and thermal expansion, allowing for tighter running tolerances for more power, less noise, and longer lifespan.Compatible With/Replacement For: Yamaha YFZ 350 Banshee 1987-20061-year warranty protects you after your purchase. We're confident that our products will work flawlessly once installed in your vehicle. But in a rare case that it does not, we'll replace it anytime within one year of your order. If you have a problem, we will take every step to assist you, contact us for a replacement.100% New aftermarket Cast Replica Piston Kit Compatible with/Replacement for Yamaha **Verify the part fits before purchasing**Specs: Description: Cast Replica Piston KitReplica Piston kit; +0.25mm. Kit includes: Piston, rings, pin, clips. Exact fit A, B, or C pistons match your cylinder bore perfectly to maximize power and performance while reducing blow-by and oil consumption.2-stroke pistons have an 18% silicon content which decreases wear and thermal expansion, allowing for tighter running tolerances for more power, less noise, and longer lifespan.High-tech Molybdenum Disulphide (MOS2) skirt coating for reduced wear and improved break-in.All piston kits include piston, rings, wrist pin, and circlips.Cast Replica pistons are OE replacements with stock OE compression ratios..Compatible With/Replacement For:Yamaha YFZ 350 Banshee 1987-2006