Upgrade your Yamaha trail bike with the FMF Powercore 4 S/A exhaust, manufacturer part number 040071 and vendor part number 79-5414. This performance exhaust is designed for improved exhaust flow and sound control compared with the stock system. Its latest Powercore 4 design uses a high-flow core with increased surface area, allowing it to absorb more sound while supporting efficient exhaust gas flow.
The FMF Powercore 4 S/A features an extruded aluminum canister, a stainless steel mid-pipe, and precision MIG/TIG-welded construction. Space-age internal packing helps manage exhaust sound while maintaining durable performance in demanding off-road conditions. The system is lighter, stronger, and more powerful than the original exhaust, making it a practical choice for riders seeking responsive performance and dependable trail use.
A U.S. Forest Service-approved, maintenance-free stainless steel spark arrestor screen is integrated into the Powercore 4 S/A design for approved off-road applications. This FMF exhaust fits 2000-2003 Yamaha TT-R125 models and 2003-2008 Yamaha TT-R125LE models, including the 2006, 2007, and 2008 TT-R125LE. Verify your motorcycle model and year before installation to ensure proper fitment.
Features:
- High-flow core: Provides more surface area to absorb sound while supporting increased exhaust flow
- Durable construction: Includes an extruded aluminum canister and a stainless steel mid-pipe with MIG/TIG-welded joints
- Advanced packing: Uses space-age internal packing for effective sound control and consistent performance
- Performance upgrade: Lighter, stronger, and more powerful than the stock exhaust system
- Spark arrestor: Includes a U.S. Forest Service-approved, maintenance-free stainless steel spark arrestor screen
- Fitment: Fits 2000-2003 Yamaha TT-R125 and 2003-2008 Yamaha TT-R125LE models
- Identification: FMF manufacturer part number 040071 and vendor part number 79-5414
Fitment:
2000 Yamaha TT-R125
2000 Yamaha TT-R125L
2001 Yamaha TT-R125
2001 Yamaha TT-R125L
2002 Yamaha TT-R125
2002 Yamaha TT-R125L
2003 Yamaha TT-R125
2003 Yamaha TT-R125L
2003 Yamaha TT-R125LE
2004 Yamaha TT-R125L
2004 Yamaha TT-R125LE
2005 Yamaha TT-R125L
2005 Yamaha TT-R125LE
2006 Yamaha TT-R125L
2006 Yamaha TT-R125LE
2007 Yamaha TT-R125L
2007 Yamaha TT-R125LE
2008 Yamaha TT-R125L
2008 Yamaha TT-R125LE
2009 Yamaha TT-R125LE
2010 Yamaha TT-R125LE
2011 Yamaha TT-R125LE
2012 Yamaha TT-R125LE
2013 Yamaha TT-R125LE
2014 Yamaha TT-R125LE
2015 Yamaha TT-R125LE
2016 Yamaha TT-R125LE
2017 Yamaha TT-R125LE
2018 Yamaha TT-R125LE
2019 Yamaha TT-R125LE
2020 Yamaha TT-R125LE
2021 Yamaha TT-R125LE
2022 Yamaha TT-R125LE
2023 Yamaha TT-R125LE
2024 Yamaha TT-R125LE
2025 Yamaha TT-R125LE
2026 Yamaha TT-R125LE