The FMF Powercore 4 exhaust muffler, manufacturer part number 040080 and vendor part number 79-2879, is designed for Yamaha TT-R90 and TT-R90E models. This performance replacement exhaust incorporates the latest Powercore 4 design, combining efficient exhaust flow with improved sound absorption for dependable off-road performance. It is a direct-fit solution for riders seeking a lighter, stronger alternative to the original exhaust system.
Constructed with an extruded aluminum canister and a stainless steel mid-pipe, the FMF Powercore 4 is MIG/TIG welded for durability in demanding riding conditions. Space-age internal packing helps manage sound while supporting consistent exhaust flow. The muffler is engineered to deliver stronger performance than stock systems while maintaining the rugged construction expected from FMF products.
The Powercore 4 S/A includes a U.S. Forest Service-approved, maintenance-free stainless steel spark arrestor screen for trail and off-road use. It fits 2000-2002 Yamaha TT-R90 models, 2003-2007 Yamaha TT-R90E models, and the 2006 Yamaha TT-R90. Confirm the motorcycle model and year before installation to ensure proper fitment.
Features:
- High-flow Powercore 4 core provides increased surface area for sound absorption while supporting efficient exhaust flow
- Extruded aluminum canister offers a lightweight and durable construction
- Stainless steel mid-pipe is MIG/TIG welded for strength and long-term reliability
- Space-age internal packing helps control exhaust sound and maintain performance
- Lighter, stronger, and more powerful than the stock exhaust system
- U.S. Forest Service-approved maintenance-free stainless steel spark arrestor screen
- Fits 2000-2002 Yamaha TT-R90, 2003-2007 Yamaha TT-R90E, and 2006 Yamaha TT-R90 models
Fitment:
2000 Yamaha TT-R90
2001 Yamaha TT-R90
2002 Yamaha TT-R90
2003 Yamaha TT-R90
2003 Yamaha TT-R90E
2004 Yamaha TT-R90E
2005 Yamaha TT-R90E
2006 Yamaha TT-R90
2006 Yamaha TT-R90E
2007 Yamaha TT-R90
2007 Yamaha TT-R90E