Increase power throughout the full RPM range with the FMF Fatty Pipe, manufacturer part number 024072 and vendor part number 024072. Designed specifically for 2019–2025 Yamaha YZ85 models, including the YZ85LW versions from 2022–2025, this performance expansion chamber helps deliver stronger, more usable power for motocross and off-road riding.
Constructed for dependable performance, the FMF Fatty Pipe is electro-nickel plated for a durable, non-chip finish that resists discoloration during normal use. Its all-around power delivery makes it a versatile choice for riders seeking improved acceleration and stronger performance across the powerband without focusing exclusively on low-end torque or top-end speed. The pipe is engineered to complement the Yamaha YZ85 engine and is intended as a direct-fit performance replacement for the original exhaust chamber.
Fitment: This FMF pipe fits 2019, 2020, 2021, 2022, 2023, 2024, and 2025 Yamaha YZ85 models, as well as 2022–2025 Yamaha YZ85LW models. Confirm the model year and exhaust configuration before installation. The FMF Fatty is part of FMF’s performance pipe range, which also includes Gnarly torque pipes and Factory Rev pipes for riders with different power delivery preferences.
Features:
- All-around power increase: Delivers stronger performance throughout the full power range.
- Electro-nickel plated finish: Provides a durable, non-chip surface designed to resist discoloration.
- YZ85-specific fitment: Designed for 2019–2025 Yamaha YZ85 and 2022–2025 Yamaha YZ85LW models.
- Performance expansion chamber: Helps improve acceleration and overall engine response for motocross and off-road riding.
- FMF part number 024072: Identifies the Fatty Pipe configuration for compatible Yamaha YZ85 applications.
Fitment:
2019 Yamaha YZ85
2020 Yamaha YZ85
2021 Yamaha YZ85
2022 Yamaha YZ85
2022 Yamaha YZ85LW
2023 Yamaha YZ85
2023 Yamaha YZ85LW
2024 Yamaha YZ85
2024 Yamaha YZ85LW
2025 Yamaha YZ85
2026 Yamaha YZ85
2026 Yamaha YZ85LW