Piston Kit Namura Hyperdrive CRF450R 09-12 12:1 95.97mm Features: Machined smooth piston crown to reflect combustion heat while reducing carbon buildup Hard anodized piston crown with a hardness of HRB 105 MOS2 coating to draw heat through piston walls and out the bottom Minimized piston expansion and contraction Pistons are more resistant to wear and scuffing, expand less with heat and are stronger Higher Performance piston without a higher price Carefully developed for the highest level of quality Unsurpassed in functionality and reliability Ready to serve reliably for years to come Includes: Pistons Rings Circlips Honda CRF450R 2009-2012