FMF Racing

FMF Racing Factory 4.1 RCT Stainless/Aluminum Muffler — Fits 2019-2022 Yamaha YZ250F YZ250FX

FMF Racing Factory 4.1 RCT Stainless/Aluminum Muffler — Fits 2019-2022 Yamaha YZ250F YZ250FX
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FMF Racing Factory 4.1 RCT Stainless/Aluminum Muffler — Fits 2019-2022 Yamaha YZ250F YZ250FX
FMF Racing

FMF Racing Factory 4.1 RCT Stainless/Aluminum Muffler — Fits 2019-2022 Yamaha YZ250F YZ250FX

SKU: FMF044453
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About FMF Racing FMF Racing engineers high-quality automotive parts and ...Read More

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$649.99
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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
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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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Race-Proven Power: FMF Factory 4.1 RCT

Take your Yamaha YZ250F or YZ250FX to the next level with the FMF Factory 4.1 RCT Muffler. This system is designed to provide maximum power gains while maintaining a lightweight profile. Utilizing Resonance Chamber Technology (RCT), the 4.1 RCT effectively manages exhaust gas pulses to improve low-end torque and top-end over-rev, giving you a competitive edge on the track or the trail.

Why Choose the Factory 4.1 RCT for your YZ250F?

  • RCT Technology: Advanced internal design for superior power delivery.
  • Carbon Fiber End Cap: Reduces weight and provides a sleek, modern look.
  • Stainless/Aluminum Build: Exceptional durability for high-intensity riding.
  • Improved Throttle Response: Get the power you need when you need it.
  • Easy Maintenance: Designed for quick servicing and repacking.

The Factory 4.1 RCT is the choice of champions who demand reliability and performance. Its construction is optimized for the high-revving nature of the 250cc engine, ensuring you get the most out of every gear. Whether you are racing for the holeshot or navigating technical terrain, this muffler delivers the performance you need to stay ahead of the pack. Upgrade your bike today with high-quality components from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2019-2022 Yamaha YZ250F Base
2020-2021 Yamaha YZ250FX 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

Race-Proven Power: FMF Factory 4.1 RCT

Take your Yamaha YZ250F or YZ250FX to the next level with the FMF Factory 4.1 RCT Muffler. This system is designed to provide maximum power gains while maintaining a lightweight profile. Utilizing Resonance Chamber Technology (RCT), the 4.1 RCT effectively manages exhaust gas pulses to improve low-end torque and top-end over-rev, giving you a competitive edge on the track or the trail.

Why Choose the Factory 4.1 RCT for your YZ250F?

  • RCT Technology: Advanced internal design for superior power delivery.
  • Carbon Fiber End Cap: Reduces weight and provides a sleek, modern look.
  • Stainless/Aluminum Build: Exceptional durability for high-intensity riding.
  • Improved Throttle Response: Get the power you need when you need it.
  • Easy Maintenance: Designed for quick servicing and repacking.

The Factory 4.1 RCT is the choice of champions who demand reliability and performance. Its construction is optimized for the high-revving nature of the 250cc engine, ensuring you get the most out of every gear. Whether you are racing for the holeshot or navigating technical terrain, this muffler delivers the performance you need to stay ahead of the pack. Upgrade your bike today with high-quality components from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2019-2022 Yamaha YZ250F Base
2020-2021 Yamaha YZ250FX 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

Race-Proven Power: FMF Factory 4.1 RCT

Take your Yamaha YZ250F or YZ250FX to the next level with the FMF Factory 4.1 RCT Muffler. This system is designed to provide maximum power gains while maintaining a lightweight profile. Utilizing Resonance Chamber Technology (RCT), the 4.1 RCT effectively manages exhaust gas pulses to improve low-end torque and top-end over-rev, giving you a competitive edge on the track or the trail.

Why Choose the Factory 4.1 RCT for your YZ250F?

  • RCT Technology: Advanced internal design for superior power delivery.
  • Carbon Fiber End Cap: Reduces weight and provides a sleek, modern look.
  • Stainless/Aluminum Build: Exceptional durability for high-intensity riding.
  • Improved Throttle Response: Get the power you need when you need it.
  • Easy Maintenance: Designed for quick servicing and repacking.

The Factory 4.1 RCT is the choice of champions who demand reliability and performance. Its construction is optimized for the high-revving nature of the 250cc engine, ensuring you get the most out of every gear. Whether you are racing for the holeshot or navigating technical terrain, this muffler delivers the performance you need to stay ahead of the pack. Upgrade your bike today with high-quality components from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2019-2022 Yamaha YZ250F Base
2020-2021 Yamaha YZ250FX Base

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