FMF Racing Q4 S/A Muffler — Fits Yamaha YZ250F 06-09, YZ450F 06-09, WR250F 07-13, WR450F 07-11

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SKU: FMF044232
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About FMF Racing

FMF Racing engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FMF Racing lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

FMF Racing Q4 S/A Muffler for Yamaha YZ/WR Series

Experience championship-proven performance with the FMF Racing Q4 S/A Muffler, designed for a range of Yamaha models including the YZ250F (2006-2009), YZ450F (2006-2009), WR250F (2007-2013), and WR450F (2007-2011). Developed through years of intensive off-road racing, this muffler delivers exceptional power gains while adhering to strict sound regulations, typically operating below 94dB.

Performance and Sound:

  • Championship Performance: Engineered to provide maximum power output and improved throttle response, benefiting from FMF's extensive racing heritage.
  • Controlled Sound Output: Features a sound-dampening design that ensures compliance with most track and trail sound limits, typically registering at 96dB or less.
  • High-Quality Construction: Built using aircraft-grade aluminum for the canister and high-strength stainless steel for internal components and headers, ensuring durability and heat resistance.
  • Versatile Fitment: Designed to work seamlessly with both stock and FMF headers, offering flexibility for your exhaust system setup.

The FMF Racing Q4 S/A Muffler is the perfect choice for riders who demand top-tier performance without compromising on sound regulations. Its robust construction guarantees longevity, while the optimized design ensures your Yamaha performs at its peak. Whether you're competing or enjoying recreational riding, this muffler enhances both the power and the distinctive sound of your bike. Trust in FMF Racing's expertise for your exhaust needs.

Elevate your Yamaha's performance and sound profile. Choose the FMF Racing Q4 S/A Muffler from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2007-2013 Yamaha WR250F Base
2007-2011 Yamaha WR450F Base
2006-2009 Yamaha YZ250F Base
2006-2009 Yamaha YZ450F Base

Product Details

Product Description
Part Numbers
Sizing & Fit

About FMF Racing

FMF Racing engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FMF Racing lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

FMF Racing Q4 S/A Muffler for Yamaha YZ/WR Series

Experience championship-proven performance with the FMF Racing Q4 S/A Muffler, designed for a range of Yamaha models including the YZ250F (2006-2009), YZ450F (2006-2009), WR250F (2007-2013), and WR450F (2007-2011). Developed through years of intensive off-road racing, this muffler delivers exceptional power gains while adhering to strict sound regulations, typically operating below 94dB.

Performance and Sound:

  • Championship Performance: Engineered to provide maximum power output and improved throttle response, benefiting from FMF's extensive racing heritage.
  • Controlled Sound Output: Features a sound-dampening design that ensures compliance with most track and trail sound limits, typically registering at 96dB or less.
  • High-Quality Construction: Built using aircraft-grade aluminum for the canister and high-strength stainless steel for internal components and headers, ensuring durability and heat resistance.
  • Versatile Fitment: Designed to work seamlessly with both stock and FMF headers, offering flexibility for your exhaust system setup.

The FMF Racing Q4 S/A Muffler is the perfect choice for riders who demand top-tier performance without compromising on sound regulations. Its robust construction guarantees longevity, while the optimized design ensures your Yamaha performs at its peak. Whether you're competing or enjoying recreational riding, this muffler enhances both the power and the distinctive sound of your bike. Trust in FMF Racing's expertise for your exhaust needs.

Elevate your Yamaha's performance and sound profile. Choose the FMF Racing Q4 S/A Muffler from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2007-2013 Yamaha WR250F Base
2007-2011 Yamaha WR450F Base
2006-2009 Yamaha YZ250F Base
2006-2009 Yamaha YZ450F Base

Product Details

Product Description

About FMF Racing

FMF Racing engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full FMF Racing lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

FMF Racing Q4 S/A Muffler for Yamaha YZ/WR Series

Experience championship-proven performance with the FMF Racing Q4 S/A Muffler, designed for a range of Yamaha models including the YZ250F (2006-2009), YZ450F (2006-2009), WR250F (2007-2013), and WR450F (2007-2011). Developed through years of intensive off-road racing, this muffler delivers exceptional power gains while adhering to strict sound regulations, typically operating below 94dB.

Performance and Sound:

  • Championship Performance: Engineered to provide maximum power output and improved throttle response, benefiting from FMF's extensive racing heritage.
  • Controlled Sound Output: Features a sound-dampening design that ensures compliance with most track and trail sound limits, typically registering at 96dB or less.
  • High-Quality Construction: Built using aircraft-grade aluminum for the canister and high-strength stainless steel for internal components and headers, ensuring durability and heat resistance.
  • Versatile Fitment: Designed to work seamlessly with both stock and FMF headers, offering flexibility for your exhaust system setup.

The FMF Racing Q4 S/A Muffler is the perfect choice for riders who demand top-tier performance without compromising on sound regulations. Its robust construction guarantees longevity, while the optimized design ensures your Yamaha performs at its peak. Whether you're competing or enjoying recreational riding, this muffler enhances both the power and the distinctive sound of your bike. Trust in FMF Racing's expertise for your exhaust needs.

Elevate your Yamaha's performance and sound profile. Choose the FMF Racing Q4 S/A Muffler from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2007-2013 Yamaha WR250F Base
2007-2011 Yamaha WR450F Base
2006-2009 Yamaha YZ250F Base
2006-2009 Yamaha YZ450F Base

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