Prox Piston Kit Crf250r `16-17 13.8:1 (76.78mm)

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 Bore - Standard 76.80 mm Boss Space In 16.80 mm Compression Height 11.00 mm Country of Origin USA Piston Head Type Flat with raised top Piston Pin Hole Diameter 16.00 mm Piston Size 76.78 mm Skirt Coating -