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Orders over $79.00 will receive free shipping. This is a residential delivery service, deliveries Monday through Friday from 9:00am to 8:00pm.
Learn MoreImportant note: This piston is for a stock sized bore. Please measure your cylinder to check clearance before ordering.
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 and European engine manufacturers. ProX Piston Kits are a first class solution to replace the original piston in your machine.
Most (but NOT all) ProX pistons come with a coating. The O.E.M. style tin-coated pistons assist the wear-in process as when you first started the bike. ProX has 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 Variant | Manufacturer Part # |
---|---|
Stock | 01.6521.B |
Stock Bore / 94.94mm / A / 11.0:1 | 01.6521.A |
Stock Bore / 94.96mm / C / 11.0:1 | 01.6521.C |
WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. For more information, go to www.P65Warnings.ca.gov.