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 | 5 Valve Pockets, Forged Piston |
Bore - Actual | 77.00 mm |
Bore - Oversize | STD |
Bore - Standard | 77.00 mm |
Boss Space In | 17.50 mm |
Compression Height | 14.10 mm |
Compression Ratio - Actual | 12.5:1 |
Country of Origin | Japan |
OEM Reference No | 5NL-11631-20 |
Piston Head Type | Hollow |
Piston Pin Hole Diameter | 16.00 mm |
Piston Size | 76.95 mm |
Skirt Coating | - |
Total Height | 37.70 mm |