Restore top-end performance on your Yamaha YFS200 Blaster with the Namura NA-40003-6K Top End Kit. Designed for 1988–1997 Yamaha YFS200 Blaster models, this OEM-style replacement kit includes the essential components needed for a dependable piston and cylinder service. The kit includes a piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit for a complete installation solution.
The Namura piston features MOS2, or Teflon and molybdenum, coated skirts applied through a rolled-on process that creates a strong, durable bond. This coating helps improve heat transfer, reduce friction, and minimize the risk of cold seizures. The machined smooth piston head reflects combustion heat and helps reduce carbon buildup, supporting piston protection and consistent engine operation. An anodized dome increases heat resistance and durability, while the hypereutectic casting process provides higher silicon content for controlled expansion, improved wear resistance, and reliable performance under elevated cylinder temperatures.
With a 67.42 mm piston diameter and a 6.6:1 compression ratio, the Namura NA-40003-6K is intended for riders and technicians seeking an OEM-style top-end replacement for compatible Yamaha Blaster applications. Verify the existing bore, engine condition, and service specifications before installation. Fitment includes the 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, and 1997 Yamaha YFS200 Blaster.
Features:
- Complete Top End Kit: Includes piston, rings, wrist pin, retaining clips, top-end bearing, and gasket kit.
- MOS2-Coated Skirts: Teflon and molybdenum coating helps improve heat transfer, reduce friction, and minimize cold-seizure risk.
- Machined Smooth Head: Reflects combustion heat and helps reduce carbon buildup for improved piston protection.
- Anodized Dome: Increases heat resistance and piston durability.
- Hypereutectic Construction: Higher silicon content helps control expansion, improve wear resistance, and withstand elevated cylinder temperatures.
- Fitment: Designed for 1988–1997 Yamaha YFS200 Blaster models.
- Piston Size: 67.42 mm piston diameter with a 6.6:1 compression ratio.
Fitment:
1988 Yamaha YFS200 Blaster
1989 Yamaha YFS200 Blaster
1990 Yamaha YFS200 Blaster
1991 Yamaha YFS200 Blaster
1992 Yamaha YFS200 Blaster
1993 Yamaha YFS200 Blaster
1994 Yamaha YFS200 Blaster
1995 Yamaha YFS200 Blaster
1996 Yamaha YFS200 Blaster
1997 Yamaha YFS200 Blaster
1998 Yamaha YFS200 Blaster
1999 Yamaha YFS200 Blaster
2000 Yamaha YFS200 Blaster
2001 Yamaha YFS200 Blaster
2002 Yamaha YFS200 Blaster
2003 Yamaha YFS200 Blaster
2004 Yamaha YFS200 Blaster
2005 Yamaha YFS200 Blaster
2006 Yamaha YFS200 Blaster