Description
If you’re rebuilding your 2004–2005 KX250F or pushing it to its limits in competition, piston wear or damage will kill your power delivery and throttle response. The Wiseco PK1239 restores full compression and horsepower with a forged-aluminum top end that handles sustained high RPM without compromise. This complete kit eliminates the guesswork—everything you need arrives ready to install, so you can focus on riding, not sourcing parts.
- Bore Size: 77.00 mm
- Compression Ratio: 14.1:1
- Material: Forged aluminum alloy
- Weight: Lightweight construction
- Package Contents: Complete top end kit
- Fitment: 2004–2005 Kawasaki KX250F
- Installation: Bolt-on overhaul
- Heat Management: Optimized cooling design
- MPN: PK1239
