01.2321.B – Pro-X Piston Kit STD for Yamaha YZ250, YZ250X & Suzuki RM250. Standard bore of 66.36 mm.
- The smart solution to save money on engine repairs
- Manufactured in Japan and designed to be OE replacements.
- Cast from a high-silicon-content aluminum alloy that meets or exceeds OE specifications, then CNC-machined to extremely close tolerances.
- Pistons supplied in a kit package that includes rings, wrist pins and circle clips.
Fits Yamaha models:
1999-2025 YZ 250
2016-2025 YZ 250 X
Fits Suzuki models:
2003-2012 RM 250
Fits Fantic models:
2022-2023 XX 250
