The FMF Fatty Exhaust Pipe, manufacturer part number 024023 and vendor part number 78-1301, is designed for Yamaha PW50 models from 1983 through 1992. This performance expansion chamber is engineered to provide an all-around power increase throughout the engine’s usable power range, making it a practical upgrade for trail riding, recreational use, and riders seeking stronger overall response.
The FMF Fatty pipe is electro-nickel plated for a durable, non-chip finish that helps resist discoloration under normal riding conditions. Its construction is designed to deliver dependable performance while maintaining the fit and function expected from an FMF exhaust system. Installation should be completed with the appropriate mounting hardware and supporting components for the specific Yamaha PW50 application.
Fitment: Fits 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, and 1992 Yamaha PW50 models. Verify the motorcycle year and model before ordering to ensure compatibility. The FMF Fatty Exhaust Pipe is intended for the listed PW50 applications and is not interchangeable with FMF Gnarly or Factory Rev pipe designs, which are tuned for different power-delivery characteristics.
Features:
- All-around power increase throughout the Yamaha PW50 power range
- Electro-nickel-plated finish provides a durable, non-chip surface that helps resist discoloration
- FMF Fatty design balances power delivery across the usable RPM range
- Designed for Yamaha PW50 models from 1983 through 1992
- Brand: FMF
- Manufacturer part number: 024023
- Vendor part number: 78-1301
Fitment:
1983 Yamaha PW 50
1984 Yamaha PW 50
1985 Yamaha PW 50
1986 Yamaha PW 50
1987 Yamaha PW 50
1988 Yamaha PW 50
1989 Yamaha PW 50
1990 Yamaha PW 50
1991 Yamaha PW 50
1992 Yamaha PW 50
1993 Yamaha PW 50
1994 Yamaha PW 50
1995 Yamaha PW 50
1996 Yamaha PW 50
1997 Yamaha PW 50
1998 Yamaha PW 50
1999 Yamaha PW 50
2000 Yamaha PW 50
2001 Yamaha PW 50
2002 Yamaha PW 50
2003 Yamaha PW 50
2004 Yamaha PW 50
2005 Yamaha PW 50
2006 Yamaha PW 50
2007 Yamaha PW 50
2008 Yamaha PW 50
2009 Yamaha PW 50
2012 Yamaha PW 50
2013 Yamaha PW 50
2014 Yamaha PW 50
2015 Yamaha PW 50
2016 Yamaha PW 50
2017 Yamaha PW 50
2018 Yamaha PW 50
2019 Yamaha PW 50
2020 Yamaha PW 50
2021 Yamaha PW 50
2022 Yamaha PW 50
2023 Yamaha PW 50
2024 Yamaha PW 50
2025 Yamaha PW 50
2026 Yamaha PW 50