FMF Racing Factory 4.1 RCT SO Muffler - Aluminum for Honda CRF450X (2005-2009, 2012-2017)

SKU: FMF041517
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Sale price$599.99
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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

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.

FMF Racing Factory 4.1 RCT SO Aluminum Muffler for Honda CRF450X

Unleash the full potential of your Honda CRF450X (2005-2009 and 2012-2017) with the FMF Racing Factory 4.1 RCT SO Aluminum Muffler. Engineered for peak performance, this muffler delivers an aggressive sound and significant power gains, making it the ultimate upgrade for serious off-road enthusiasts.

Experience the FMF Difference:

  • Advanced RCT Technology: The Resonance Chamber Technology (RCT) core minimizes sound output while maximizing power delivery, offering a superior balance of performance and acoustics.
  • Lightweight Aluminum Construction: The durable aluminum canister reduces overall weight, improving your bike's agility and handling.
  • Enhanced Powerband: Expect improved throttle response and a broader, more usable powerband across the entire RPM range.
  • Aggressive Sound: Delivers the signature FMF Racing sound that riders demand, without compromising regulatory noise limits.
  • Direct Fit Design: Precision-engineered for a seamless fit on your Honda CRF450X, ensuring a straightforward installation process.

The FMF Racing Factory 4.1 RCT SO Muffler is the result of extensive research and development, providing riders with a competitive edge. Whether you're hitting the track or the trail, this muffler is designed to enhance your riding experience with its exceptional performance, durable construction, and unmistakable FMF sound. Upgrade your CRF450X today and feel the difference.

Vehicle Fitment

Years Make Model Trim
2005-2009 Honda CRF450X Base
2012-2017 Honda CRF450X 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.

FMF Racing Factory 4.1 RCT SO Aluminum Muffler for Honda CRF450X

Unleash the full potential of your Honda CRF450X (2005-2009 and 2012-2017) with the FMF Racing Factory 4.1 RCT SO Aluminum Muffler. Engineered for peak performance, this muffler delivers an aggressive sound and significant power gains, making it the ultimate upgrade for serious off-road enthusiasts.

Experience the FMF Difference:

  • Advanced RCT Technology: The Resonance Chamber Technology (RCT) core minimizes sound output while maximizing power delivery, offering a superior balance of performance and acoustics.
  • Lightweight Aluminum Construction: The durable aluminum canister reduces overall weight, improving your bike's agility and handling.
  • Enhanced Powerband: Expect improved throttle response and a broader, more usable powerband across the entire RPM range.
  • Aggressive Sound: Delivers the signature FMF Racing sound that riders demand, without compromising regulatory noise limits.
  • Direct Fit Design: Precision-engineered for a seamless fit on your Honda CRF450X, ensuring a straightforward installation process.

The FMF Racing Factory 4.1 RCT SO Muffler is the result of extensive research and development, providing riders with a competitive edge. Whether you're hitting the track or the trail, this muffler is designed to enhance your riding experience with its exceptional performance, durable construction, and unmistakable FMF sound. Upgrade your CRF450X today and feel the difference.

Vehicle Fitment

Years Make Model Trim
2005-2009 Honda CRF450X Base
2012-2017 Honda CRF450X 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.

FMF Racing Factory 4.1 RCT SO Aluminum Muffler for Honda CRF450X

Unleash the full potential of your Honda CRF450X (2005-2009 and 2012-2017) with the FMF Racing Factory 4.1 RCT SO Aluminum Muffler. Engineered for peak performance, this muffler delivers an aggressive sound and significant power gains, making it the ultimate upgrade for serious off-road enthusiasts.

Experience the FMF Difference:

  • Advanced RCT Technology: The Resonance Chamber Technology (RCT) core minimizes sound output while maximizing power delivery, offering a superior balance of performance and acoustics.
  • Lightweight Aluminum Construction: The durable aluminum canister reduces overall weight, improving your bike's agility and handling.
  • Enhanced Powerband: Expect improved throttle response and a broader, more usable powerband across the entire RPM range.
  • Aggressive Sound: Delivers the signature FMF Racing sound that riders demand, without compromising regulatory noise limits.
  • Direct Fit Design: Precision-engineered for a seamless fit on your Honda CRF450X, ensuring a straightforward installation process.

The FMF Racing Factory 4.1 RCT SO Muffler is the result of extensive research and development, providing riders with a competitive edge. Whether you're hitting the track or the trail, this muffler is designed to enhance your riding experience with its exceptional performance, durable construction, and unmistakable FMF sound. Upgrade your CRF450X today and feel the difference.

Vehicle Fitment

Years Make Model Trim
2005-2009 Honda CRF450X Base
2012-2017 Honda CRF450X Base

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