PISTON KIT 78.00mm HIGH COMPRESSION 13.5:1

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.
Replacements parts. PROX RING SET 02.1335

Honda CRF250R 2004 - 2007 (High Comp),
Honda CRF250R 2008 - 2009 (Standard Comp),
Honda CRF250X 2004 - 2017 (High Comp),

PROX 01.1339.C