Restore dependable top-end performance with the NAMURA NA-20000-4K Top End Kit, designed for the Kawasaki KLF300B Bayou 2x4. This 76.95 mm, 11:1 compression kit includes the essential components required for a top-end rebuild: piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit. It is engineered for direct fitment on 1988–1997 Kawasaki KLF300B Bayou 2x4 models equipped with SRA suspension.
The NAMURA piston uses a hypereutectic casting process that increases silicon content to help reduce expansion, improve wear resistance, and withstand higher cylinder temperatures. Its MOS2, or Teflon/molybdenum, coated skirts use a rolled-on application process designed to create a stronger bond than conventional spray-on coatings. This coating helps improve heat transfer, reduce friction, and minimize the risk of cold seizures during operation.
Machined smooth heads help reflect combustion heat and reduce carbon buildup, helping protect the piston crown during demanding use. The anodized dome improves heat resistance and durability, while providing additional strength compared with non-anodized piston designs. The 11:1 compression ratio is suited to riders seeking a performance-oriented replacement top end while maintaining application-specific compatibility.
Manufacturer and vendor part number: NAMURA NA-20000-4K. Verify the engine configuration, existing cylinder condition, and required piston clearance before installation. This kit is intended for the listed Kawasaki Bayou application and should be installed according to the vehicle service manual and proper engine-rebuilding procedures.
Features:
- Application: Fits 1988–1997 Kawasaki KLF300B Bayou 2x4 models with SRA suspension
- Kit contents: Includes piston, rings, wrist pin, retaining clips, top-end bearing, and gasket kit
- Piston size: 76.95 mm bore size
- Compression ratio: 11:1 performance-oriented design
- MOS2 coating: Rolled-on Teflon/molybdenum skirt coating helps reduce friction, improve heat transfer, and minimize cold-seizure risk
- Machined smooth head: Helps reflect combustion heat and reduce carbon buildup
- Anodized dome: Improves heat resistance and piston durability
- Hypereutectic construction: Provides reduced expansion, increased wear resistance, and improved high-temperature performance
- Brand: NAMURA
- Manufacturer and vendor part number: NA-20000-4K
Fitment:
1986 Kawasaki KLF300A Bayou 2x4 [SRA]
1987 Kawasaki KLF300A Bayou 2x4 [SRA]
1988 Kawasaki KLF300B Bayou 2X4 [SRA]
1989 Kawasaki KLF300B Bayou 2X4 [SRA]
1989 Kawasaki KLF300C Bayou 4X4 [SRA]
1990 Kawasaki KLF300B Bayou 2X4 [SRA]
1990 Kawasaki KLF300C Bayou 4X4 [SRA]
1991 Kawasaki KLF300B Bayou 2X4 [SRA]
1991 Kawasaki KLF300C Bayou 4X4 [SRA]
1992 Kawasaki KLF300B Bayou 2X4 [SRA]
1992 Kawasaki KLF300C Bayou 4X4 [SRA]
1993 Kawasaki KLF300B Bayou 2X4 [SRA]
1993 Kawasaki KLF300C Bayou 4X4 [SRA]
1994 Kawasaki KLF300B Bayou 2X4 [SRA]
1994 Kawasaki KLF300C Bayou 4X4 [SRA]
1995 Kawasaki KEF 300 Lakota Utility [SRA]
1995 Kawasaki KLF300B Bayou 2X4 [SRA]
1995 Kawasaki KLF300C Bayou 4X4 [SRA]
1996 Kawasaki KEF 300 Lakota Utility [SRA]
1996 Kawasaki KLF300B Bayou 2X4 [SRA]
1996 Kawasaki KLF300C Bayou 4X4 [SRA]
1997 Kawasaki KEF 300 Lakota Utility [SRA]
1997 Kawasaki KLF300B Bayou 2X4 [SRA]
1997 Kawasaki KLF300C Bayou 4X4 [SRA]
1998 Kawasaki KEF 300 Lakota Utility [SRA]
1998 Kawasaki KLF300B Bayou 2X4 [SRA]
1998 Kawasaki KLF300C Bayou 4X4 [SRA]
1999 Kawasaki KEF 300 Lakota Utility [SRA]
1999 Kawasaki KLF300B Bayou 2X4 [SRA]
1999 Kawasaki KLF300C Bayou 4X4 [SRA]
1999 Kawasaki KVF300 Prairie 4X4 [SRA]
1999 Kawasaki KVF300B Prairie 2X4 [SRA]
2000 Kawasaki KEF 300 Lakota Utility [SRA]
2000 Kawasaki KLF300B Bayou 2X4 [SRA]
2000 Kawasaki KLF300C Bayou 4X4 [SRA]
2000 Kawasaki KVF300 Prairie 4X4 [SRA]
2000 Kawasaki KVF300B Prairie 2X4 [SRA]
2001 Kawasaki KEF 300 Lakota Sport [SRA]
2001 Kawasaki KLF300B Bayou 2X4 [SRA]
2001 Kawasaki KLF300C Bayou 4X4 [SRA]
2001 Kawasaki KVF300 Prairie 4X4 [SRA]
2001 Kawasaki KVF300B Prairie 2X4 [SRA]
2002 Kawasaki KEF 300 Lakota Sport [SRA]
2002 Kawasaki KLF300B Bayou 2X4 [SRA]
2002 Kawasaki KLF300C Bayou 4X4 [SRA]
2002 Kawasaki KVF300 Prairie 4X4 [SRA]
2002 Kawasaki KVF300B Prairie 2X4 [SRA]
2003 Kawasaki KEF 300 Lakota Sport [SRA]
2003 Kawasaki KLF300B Bayou 2X4 [SRA]
2003 Kawasaki KLF300C Bayou 4X4 [SRA]
2004 Kawasaki KLF300B Bayou 2X4 [SRA]
2004 Kawasaki KLF300C Bayou 4X4 [SRA]