Prox Kolbenkit Cr250 `97-01 + Rm250 `98 Art (66.35mm)

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 Reed cut-out, Cast Piston Bore - Actual 66.40 mm Bore - Oversize STD Bore - Standard 66.40 mm Boss Space In 23.00 mm Compression Height 29.00 mm Country of Origin Japan Piston Head Type Flat Piston Pin Hole Diameter 18.00 mm Piston Size 66.35 mm Ring Locating Pin (E) 14.00 mm Ring Locating Pin (F) 14.00 mm Skirt Coating Mos2 Skirt Coating Text on Piston MADE IN JAPAN / 012 / ART L2 Total Height 75.50 mm