FMF Racing Powercore 4 Muffler — Fits Yamaha YZ250F 06-09, YZ450F 06-09, WR250F 07-13, WR450F 07-11

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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.

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FMF Racing Powercore 4 Muffler for Yamaha YZ/WR Series

Enhance the performance and sound of your Yamaha YZ250F (2006-2009), YZ450F (2006-2009), WR250F (2007-2013), and WR450F (2007-2011) with the FMF Racing Powercore 4 Muffler. This premium exhaust component is engineered to deliver maximum power output and improved throttle response, making it a vital upgrade for any serious rider. Constructed with an aircraft-quality extruded aluminum canister and robust stainless steel components, the Powercore 4 offers exceptional durability and performance that stands up to the demands of off-road riding.

Key Features and Benefits:

  • Superior Power Gains: Designed to optimize exhaust flow, resulting in significant horsepower and torque increases across the entire RPM range.
  • Lightweight Durability: The extruded aluminum canister provides a lightweight yet incredibly strong construction, while stainless steel end caps and mid-pipe ensure resistance to corrosion and heat.
  • Race-Inspired Design: Delivers the aggressive FMF Racing sound and performance expected from a top-tier exhaust system.
  • Precise Fitment: Engineered for a direct fit on the specified Yamaha models, simplifying installation and ensuring seamless integration with your existing exhaust system.

The FMF Racing Powercore 4 Muffler is the ultimate choice for riders seeking to push their Yamaha's limits. Its advanced design not only boosts performance but also enhances the overall riding experience with its distinctive tone and responsiveness. Whether you're tackling challenging trails or competing on the track, this muffler provides the power and reliability you need to succeed. Experience the FMF difference and elevate your ride.

Get the most out of your Yamaha. Choose the FMF Racing Powercore 4 Muffler, available now at 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 Powercore 4 Muffler for Yamaha YZ/WR Series

Enhance the performance and sound of your Yamaha YZ250F (2006-2009), YZ450F (2006-2009), WR250F (2007-2013), and WR450F (2007-2011) with the FMF Racing Powercore 4 Muffler. This premium exhaust component is engineered to deliver maximum power output and improved throttle response, making it a vital upgrade for any serious rider. Constructed with an aircraft-quality extruded aluminum canister and robust stainless steel components, the Powercore 4 offers exceptional durability and performance that stands up to the demands of off-road riding.

Key Features and Benefits:

  • Superior Power Gains: Designed to optimize exhaust flow, resulting in significant horsepower and torque increases across the entire RPM range.
  • Lightweight Durability: The extruded aluminum canister provides a lightweight yet incredibly strong construction, while stainless steel end caps and mid-pipe ensure resistance to corrosion and heat.
  • Race-Inspired Design: Delivers the aggressive FMF Racing sound and performance expected from a top-tier exhaust system.
  • Precise Fitment: Engineered for a direct fit on the specified Yamaha models, simplifying installation and ensuring seamless integration with your existing exhaust system.

The FMF Racing Powercore 4 Muffler is the ultimate choice for riders seeking to push their Yamaha's limits. Its advanced design not only boosts performance but also enhances the overall riding experience with its distinctive tone and responsiveness. Whether you're tackling challenging trails or competing on the track, this muffler provides the power and reliability you need to succeed. Experience the FMF difference and elevate your ride.

Get the most out of your Yamaha. Choose the FMF Racing Powercore 4 Muffler, available now at 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 Powercore 4 Muffler for Yamaha YZ/WR Series

Enhance the performance and sound of your Yamaha YZ250F (2006-2009), YZ450F (2006-2009), WR250F (2007-2013), and WR450F (2007-2011) with the FMF Racing Powercore 4 Muffler. This premium exhaust component is engineered to deliver maximum power output and improved throttle response, making it a vital upgrade for any serious rider. Constructed with an aircraft-quality extruded aluminum canister and robust stainless steel components, the Powercore 4 offers exceptional durability and performance that stands up to the demands of off-road riding.

Key Features and Benefits:

  • Superior Power Gains: Designed to optimize exhaust flow, resulting in significant horsepower and torque increases across the entire RPM range.
  • Lightweight Durability: The extruded aluminum canister provides a lightweight yet incredibly strong construction, while stainless steel end caps and mid-pipe ensure resistance to corrosion and heat.
  • Race-Inspired Design: Delivers the aggressive FMF Racing sound and performance expected from a top-tier exhaust system.
  • Precise Fitment: Engineered for a direct fit on the specified Yamaha models, simplifying installation and ensuring seamless integration with your existing exhaust system.

The FMF Racing Powercore 4 Muffler is the ultimate choice for riders seeking to push their Yamaha's limits. Its advanced design not only boosts performance but also enhances the overall riding experience with its distinctive tone and responsiveness. Whether you're tackling challenging trails or competing on the track, this muffler provides the power and reliability you need to succeed. Experience the FMF difference and elevate your ride.

Get the most out of your Yamaha. Choose the FMF Racing Powercore 4 Muffler, available now at 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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