The Namura NA-40003 OEM-style piston kit is designed for Yamaha YFS200 Blaster two-stroke engines from 1988 through 1997. This standard-size piston kit features a 65.92 mm piston diameter and an 11:1 compression ratio, providing a direct replacement solution for compatible applications. The kit is manufactured by Namura and supplied under vendor part number NA-40003.
Designed for standard-bore engine service, this piston kit is intended to support dependable fitment and consistent performance when replacing a worn or damaged piston. It fits 1988–1997 Yamaha YFS200 Blaster models, including the 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, and 1997 model years. Verify engine specifications and piston clearance before installation to ensure proper application.
Important fitment note: The Namura NA-40003 piston kit will not accept OEM piston rings, and its rings will not work with an OEM piston. Use the rings supplied or specified for this Namura piston kit and follow the engine manufacturer’s service procedures during installation. Proper inspection of the cylinder, wrist pin, circlips, and related components is recommended before assembly.
Features:
- Size: 65.92 mm standard-bore piston
- Model: OEM-style 11:1 compression piston kit
- Brand: Namura
- Manufacturer Part Number: NA-40003
- Vendor Part Number: NA-40003
- Fitment: 1988–1997 Yamaha YFS200 Blaster
- Application: Replacement piston kit for compatible two-stroke engines
- Compatibility: Does not accept OEM piston rings, and the supplied rings are not compatible with an OEM piston
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