The WISECO Piston Kit is designed for Yamaha PW50 applications and features a 42.00 mm piston size. Manufacturer part number 653M04200. This kit is forged from high-silicon aluminum alloy for strength and dependability and is intended for trail and racing applications.
The piston design is engineered to support increased horsepower and torque, with high compression ratios and an ultra-stiff forged construction. The piston crown, ring grooves, and pin bore are E-Coated for wear resistance and protection from micro-welding, galling, and detonation. GP Series construction generally uses less machining on the outside to help seal the bore for increased compression, while boost ports are removed for a more predictable powerband and increased pull on the top end.
The kit features a forged piston, rings, wrist pin, and circlips. Cylinder sleeves must be purchased separately. Racer's Choice pistons are intended for expert racers and tuners only and may allow increased service intervals compared with conventional WISECO pistons. Distributor part number: 653M04200. Fits 2000, 2015, 2019, 1982, 1985, 1990, 2001, 2003, 1992, and 1994 Yamaha PW50 models.
Features:
- Brand: WISECO
- Product: Piston Kit
- Size: 42.00 mm
- Manufacturer Part Number: 653M04200
- Application: Yamaha PW50
- Construction: Forged high-silicon aluminum alloy
- Performance Design: Supports increased horsepower and torque with high compression ratios
- Coating: E-Coated crown, ring grooves, and pin bore
- Included Components: Forged piston, rings, wrist pin, and circlips
- GP Series Design: Less outside machining helps seal the bore for increased compression
- Powerband Design: Boost ports removed for a more predictable powerband and increased pull on the top end
- Service Note: Cylinder sleeves must be purchased separately
- Usage: Intended for expert racers and tuners
Fitment:
1981 Yamaha PW50
1982 Yamaha PW50
1983 Yamaha PW50
1984 Yamaha PW50
1985 Yamaha PW50
1986 Yamaha PW50
1987 Yamaha PW50
1988 Yamaha PW50
1989 Yamaha PW50
1990 Yamaha PW50
1991 Yamaha PW50
1992 Yamaha PW50
1993 Yamaha PW50
1994 Yamaha PW50
1995 Yamaha PW50
1996 Yamaha PW50
1997 Yamaha PW50
1998 Yamaha PW50
1999 Yamaha PW50
2000 Yamaha PW50
2001 Yamaha PW50
2002 Yamaha PW50
2003 Yamaha PW50
2004 Yamaha PW50
2005 Yamaha PW50
2006 Yamaha PW50
2007 Yamaha PW50
2008 Yamaha PW50
2009 Yamaha PW50
2010 Yamaha PW 50
2011 Yamaha PW 50
2012 Yamaha PW50
2013 Yamaha PW50
2014 Yamaha PW50
2015 Yamaha PW50
2016 Yamaha PW50
2017 Yamaha PW50
2018 Yamaha PW50
2019 Yamaha PW50
2020 Yamaha PW50
2021 Yamaha PW50
2022 Yamaha PW50
2023 Yamaha PW50
2024 Yamaha PW50
2025 Yamaha PW50
2026 Yamaha PW50