Prox High Comp Piston Kit Crf450r `09-12 13.0:1 (95.97mm)

ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is used for all major Japanese engine manufacturers. ProX Piston Kits are a first class solution to replace the original piston in your Motorcycle, Scooter, Moped, ATV, Personal Watercraft, etc. Coated for ultimate performance Most of the ProX pistons come with a coating. Our OEM style Tin coated pistons assist the wear in process when you just started the bike. We have developed a new skirt coating that not only assists the wear in process, but also helps reducing friction after the wear in. The black coating is made from a delicate mix of materials and will increase performance.   Product specifications Attribute Value Additional Info 4 Valve Pockets, Forged Piston Bore - Actual 96.00 mm Bore - Oversize 96.00 mm Bore - Standard 96.00 mm Boss Space In 22.80 mm Compression Height 11.20 mm Compression Ratio - Actual 13:1 Country of Origin USA OEM Reference No 13101-MEN-A30 Piston Head Type Flat Piston Pin Hole Diameter 19.00 mm Piston Size 95.97 mm Skirt Coating - Total Height 37.00 mm