FMF Racing Q4 Spark Arrestor Muffler — Fits 2020-2021 Kawasaki KLX300R

SKU: FMF042388
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About FMF Racing FMF Racing engineers high-quality automotive parts and ...Read More

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Sale price$449.99
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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.

Watch in action

Unlock Trail Performance with FMF Q4

The FMF Q4 Spark Arrestor Muffler is engineered specifically for the 2020-2021 Kawasaki KLX300R, delivering the perfect balance of power, sound, and trail compliance. Designed for riders who demand performance without compromising on noise regulations, this slip-on system provides a significant boost in torque and throttle response across the entire RPM range.

Key Features and Benefits

  • Trail Legal: Integrated spark arrestor ensures compliance with USFS regulations.
  • Performance Gains: Optimized internal baffling increases power output and improves engine efficiency.
  • Durable Construction: Lightweight materials built to withstand the rigors of off-road riding.
  • Precision Fit: Specifically tuned for the KLX300R engine mapping for easy installation.
  • Signature Sound: Deep, aggressive exhaust note without excessive decibels.

Whether you are tackling technical single-track or open fire roads, the FMF Q4 offers the durability and performance you need to stay ahead of the pack. Its advanced design minimizes weight compared to the stock exhaust, improving the overall handling and flickability of your Kawasaki. Experience the difference of a race-proven exhaust system that is built to perform in the toughest environments. Upgrade your ride with the FMF Q4 available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2020-2021 Kawasaki KLX300R 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

Unlock Trail Performance with FMF Q4

The FMF Q4 Spark Arrestor Muffler is engineered specifically for the 2020-2021 Kawasaki KLX300R, delivering the perfect balance of power, sound, and trail compliance. Designed for riders who demand performance without compromising on noise regulations, this slip-on system provides a significant boost in torque and throttle response across the entire RPM range.

Key Features and Benefits

  • Trail Legal: Integrated spark arrestor ensures compliance with USFS regulations.
  • Performance Gains: Optimized internal baffling increases power output and improves engine efficiency.
  • Durable Construction: Lightweight materials built to withstand the rigors of off-road riding.
  • Precision Fit: Specifically tuned for the KLX300R engine mapping for easy installation.
  • Signature Sound: Deep, aggressive exhaust note without excessive decibels.

Whether you are tackling technical single-track or open fire roads, the FMF Q4 offers the durability and performance you need to stay ahead of the pack. Its advanced design minimizes weight compared to the stock exhaust, improving the overall handling and flickability of your Kawasaki. Experience the difference of a race-proven exhaust system that is built to perform in the toughest environments. Upgrade your ride with the FMF Q4 available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2020-2021 Kawasaki KLX300R 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

Unlock Trail Performance with FMF Q4

The FMF Q4 Spark Arrestor Muffler is engineered specifically for the 2020-2021 Kawasaki KLX300R, delivering the perfect balance of power, sound, and trail compliance. Designed for riders who demand performance without compromising on noise regulations, this slip-on system provides a significant boost in torque and throttle response across the entire RPM range.

Key Features and Benefits

  • Trail Legal: Integrated spark arrestor ensures compliance with USFS regulations.
  • Performance Gains: Optimized internal baffling increases power output and improves engine efficiency.
  • Durable Construction: Lightweight materials built to withstand the rigors of off-road riding.
  • Precision Fit: Specifically tuned for the KLX300R engine mapping for easy installation.
  • Signature Sound: Deep, aggressive exhaust note without excessive decibels.

Whether you are tackling technical single-track or open fire roads, the FMF Q4 offers the durability and performance you need to stay ahead of the pack. Its advanced design minimizes weight compared to the stock exhaust, improving the overall handling and flickability of your Kawasaki. Experience the difference of a race-proven exhaust system that is built to perform in the toughest environments. Upgrade your ride with the FMF Q4 available now at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2020-2021 Kawasaki KLX300R Base

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