The Namura NA-20003-2K Top End Kit is designed for Kawasaki KLF250 Bayou models from 2003 through 2011. This 69.47 mm, +0.50 mm oversize kit features an 11:1 compression ratio and provides the primary components needed to refresh the engine’s top end. The kit includes a piston, piston rings, wrist pin, retaining clips, top end bearing, and gasket kit for a comprehensive installation.
The piston uses Namura’s MOS2, or Teflon/Molybdenum, coated skirts. This rolled-on coating process creates a stronger bond than typical spray-on applications while helping improve heat transfer, reduce friction, and minimize the risk of cold seizures. Machined smooth heads help reflect combustion heat and reduce carbon buildup, supporting piston protection and consistent engine performance.
Anodized domes improve heat resistance and durability, while the hypereutectic casting process increases silicon content for reduced expansion, improved wear resistance, and greater tolerance of elevated cylinder temperatures. These design features make the kit a dependable choice for restoring performance and service life during a top-end rebuild.
Manufacturer part number: NA-20003-2K. Vendor part number: 186-20032. Fitment includes 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, and 2011 Kawasaki KLF250 Bayou models equipped with SRA configuration. Verify the existing cylinder specification and engine application before installation.
Features:
- Complete top end kit includes piston, rings, wrist pin, retaining clips, top end bearing, and gasket kit
- 69.47 mm bore size with +0.50 mm oversize specification and 11:1 compression ratio
- MOS2 Teflon/Molybdenum coated piston skirts help reduce friction, improve heat transfer, and minimize cold-seizure risk
- Machined smooth piston heads help reflect combustion heat and reduce carbon buildup
- Anodized piston domes provide increased heat resistance and durability
- Hypereutectic casting process improves wear resistance and helps control expansion at elevated cylinder temperatures
- Fits 2003-2011 Kawasaki KLF250 Bayou models with SRA configuration
- Brand: Namura; Manufacturer part number: NA-20003-2K; Vendor part number: 186-20032
Fitment:
2003 Kawasaki KLF250 Bayou [SRA]
2004 Kawasaki KLF250 Bayou [SRA]
2005 Kawasaki KLF250 Bayou [SRA]
2006 Kawasaki KLF250 Bayou [SRA]
2007 Kawasaki KLF250 Bayou [SRA]
2008 Kawasaki KLF250 Bayou [SRA]
2009 Kawasaki KLF250 Bayou [SRA]
2010 Kawasaki KLF250 Bayou [SRA]
2011 Kawasaki KLF250 Bayou [SRA]