The WISECO Piston Kit is designed for Yamaha PW50 applications and features a 41.50 mm piston size. This kit uses a forged high-silicon aluminum alloy piston designed for strength, durability, longevity, and increased horsepower. Its innovative forging design and piston skirt support increased horsepower and torque.
The kit features a forged piston, rings, wrist pin, and circlips. High-compression piston designs, ultra-stiff strutted forgings, and titanium nitride-coated rings are intended to support sustained power. Each piston is E-Coated on the crown, ring grooves, and pin bore for increased wear resistance and protection from micro-welding, galling, and detonation. GP Series parts generally have 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.
This WISECO piston kit has distributor part number 653M04150 and manufacturer part number 653M04150. It fits the 1982, 1983, 1986, 1996, 2000, 2004, 2015, 2019, 2025, and 2026 Yamaha PW50. Cylinder sleeves must be purchased separately. Racer's Choice pistons are intended for expert racers and tuners only.
Features:
- Forged high-silicon aluminum alloy piston designed for strength and dependability
- 41.50 mm piston size
- Includes forged piston, rings, wrist pin, and circlips
- High-compression design with ultra-stiff strutted forging
- Titanium nitride-coated rings
- E-Coated crown, ring grooves, and pin bore for wear resistance and protection from micro-welding, galling, and detonation
- GP Series design with less exterior machining to help seal the bore for increased compression
- Boost ports removed for a more predictable powerband and increased pull on the top end
- Fits 1982, 1983, 1986, 1996, 2000, 2004, 2015, 2019, 2025, and 2026 Yamaha PW50
- Cylinder sleeves must be purchased separately
- Distributor part number: 653M04150
- Manufacturer part number: 653M04150
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