1988 - 1997
YAMAHA WR 250
Prox piston kit yz250 '88-98 + wr250r '88-91
| ProX
Fits to:
YAMAHA WR250 [1988 - 1997]
Specifications
| Manufacturer | ProX |
|---|---|
| Bore - oversize | Standard |
| Bore - oversize metric | Standard |
| Bore size | 68,00 mm |
| Compression ratio | Standard |
| Compression ratio imperial | Standard |
| Engine type | 2-Stroke |
| Piston material | Cast, Aluminum Alloy |
| Piston size | 67,96 mm |
| Piston size metric | 67.96 mm |
| Skirt coating | Moly Coated |
| Type | Standard Size C |
| Units | Kit |
| Width | 96.000 |
| Height | 98.000 |
| Length | 98.000 |
Variant description
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.
Coated for ultimate performance:
Most of the ProX pistons come with a coating. ProX OEM style Tin coated pistons assist the wear in process when you just started the bike. ProX 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.
All ProX Piston Kits are supplied complete with Piston Rings, Wrist Pin and Circlips, ready to install!
Product description
Manufactured in Japan and designed to be OEM replacement
Cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications, then CNC-machined to extremely close tolerances
Pistons supplied in a kit package that includes rings, wrist pins and circlips