- Factory 4.1 Mufflers with stainless steel midpipes
- Available in natural titanium or blue anodized canister
- Boosts low-mid torque, broader powerband, more over-rev
- Incorporating Resonance Chamber Technology
- Patented core shape lowers sound level while maintaining maximum power output
- Patented canister shape increases internal volume for more sound absorbing material
- Patented chamber design to enhance and refine exhaust pressure
- Factory Forward Engineering centralizes mass and is less prone to crash damage
- Tuned exhaust with optimized core specifications for each application
- Comes with the quality, craftsmanship and performance expected from FMF
- Meets AMA and FIM sound requirements
- QuietCore 94db insert included
- Spark arrestor included in muffler
- Built 100% in the USA at FMFs state-of-the-art-factory
- Maintenance made easy with the removal of 4 screws on the front end cap
This item fits the following models:
Yamaha YFZ450 2004 - 2015
Yamaha YFZ450 Bill Balance Edition 2006 - 2007
Yamaha YFZ450 SE 2007 - 2008
Shipping weight: 8.47 lbs
Shipping size (L x W x H): 23.00 x 11.00 x 9.00 inches
Color: Silver
End Cap Style: Stainless Steel
Style: Performance Replacement
Type: Full Exhaust System
Model: Factory 4.1
Finish: Natural
Material: SS/AL/SS
Configuration: 1-Into-1 System
Made in US
Sold as: EA
This item fits the following vehicles:
2015 Yamaha YFZ450
2014 Yamaha YFZ450
2013 Yamaha YFZ450
2012 Yamaha YFZ450
2009 Yamaha YFZ450
2008 Yamaha YFZ450
2007 Yamaha YFZ450
2006 Yamaha YFZ450
2005 Yamaha YFZ450
2004 Yamaha YFZ450
2007 Yamaha YFZ450 Bill Balance Edition
2006 Yamaha YFZ450 Bill Balance Edition
2008 Yamaha YFZ450 SE
2007 Yamaha YFZ450 SE