The WISECO Piston Kit is designed for select Yamaha PW80 and BW80 applications and features a 47.50 mm piston size. Forged from a high-silicon aluminum alloy, the piston is engineered for strength, dependability, durability and sustained performance. Its innovative forging design and piston skirt support increased horsepower and torque, while high compression ratio designs and ultra-stiff strutted forgings contribute to power-focused performance.
This kit features a forged piston, rings, wrist pin and circlips. Titanium nitride-coated rings and E-Coating on the crown, ring grooves and pin bore provide wear resistance and protection against micro-welding, galling and detonation. GP Series parts generally use less machining on the outside to help seal the bore for increased compression. Boost ports are removed for a more predictable powerband and increased pull on the top end.
The WISECO Piston Kit has manufacturer part number 649M04750. Cylinder sleeves must be purchased separately. Racer's Choice pistons may allow increased service intervals compared with conventional WISECO pistons and are intended for expert racers and tuners only. Listed fitment includes the 1985, 1986, 1989, 1990, 1992, 1994, 1998, 2001, 2003 and 2005 Yamaha PW80, plus the 1986 Yamaha BW80.
Features:
- Brand: WISECO
- Product: Piston Kit
- Size: 47.50 mm
- Manufacturer Part Number: 649M04750
- Material: Forged high-silicon aluminum alloy
- Kit Contents: Forged piston, rings, wrist pin and circlips
- Coating: Titanium nitride-coated rings and E-Coating on the crown, ring grooves and pin bore
- Performance Design: Supports increased horsepower, torque and compression
- Fitment: 1985, 1986, 1989, 1990, 1992, 1994, 1998, 2001, 2003 and 2005 Yamaha PW80; 1986 Yamaha BW80
- Important Note: Cylinder sleeves must be purchased separately
Fitment:
1983 Yamaha PW80
1984 Yamaha PW80
1985 Yamaha PW80
1986 Yamaha Bw80
1986 Yamaha PW80
1987 Yamaha Bw80
1987 Yamaha PW80
1988 Yamaha Bw80
1988 Yamaha PW80
1989 Yamaha Bw80
1989 Yamaha PW80
1990 Yamaha Bw80
1990 Yamaha PW80
1991 Yamaha PW80
1992 Yamaha PW80
1993 Yamaha PW80
1994 Yamaha PW80
1995 Yamaha PW80
1996 Yamaha PW80
1997 Yamaha PW80
1998 Yamaha PW80
1999 Yamaha PW80
2000 Yamaha PW80
2001 Yamaha PW80
2002 Yamaha PW80
2003 Yamaha PW80
2004 Yamaha PW80
2005 Yamaha PW80
2006 Yamaha PW80