Does the FMF Racing Hex Q4 Quietcore S/A Insert fit my vehicle?

Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.

How long is shipping for FMF Racing?

Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.

How do I install the FMF Racing Hex Q4 Quietcore S/A Insert?

Cat-back exhausts are bolt-on with basic hand tools — most installs take 1-2 hours. No welding required.

Does the FMF Racing Hex Q4 Quietcore S/A Insert fit my vehicle?

Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.

How long is shipping for FMF Racing?

Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.

How do I install the FMF Racing Hex Q4 Quietcore S/A Insert?

Cat-back exhausts are bolt-on with basic hand tools — most installs take 1-2 hours. No welding required.

Does the FMF Racing Hex Q4 Quietcore S/A Insert fit my vehicle?

Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.

How long is shipping for FMF Racing?

Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.

How do I install the FMF Racing Hex Q4 Quietcore S/A Insert?

Cat-back exhausts are bolt-on with basic hand tools — most installs take 1-2 hours. No welding required.

Does the FMF Racing Hex Q4 Quietcore S/A Insert fit my vehicle?

Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.

How long is shipping for FMF Racing?

Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.

How do I install the FMF Racing Hex Q4 Quietcore S/A Insert?

Cat-back exhausts are bolt-on with basic hand tools — most installs take 1-2 hours. No welding required.

Does the FMF Racing Hex Q4 Quietcore S/A Insert fit my vehicle?

Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.

How long is shipping for FMF Racing?

Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.

How do I install the FMF Racing Hex Q4 Quietcore S/A Insert?

Cat-back exhausts are bolt-on with basic hand tools — most installs take 1-2 hours. No welding required.

FMF Racing

FMF Racing Hex Q4 Quietcore S/A Insert

Name: FMF Racing Hex Q4 Quietcore S/A Insert
Brand: FMF Racing
SKU: FMF040671
Price: 39.99 USD
Availability: InStock

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FMF Racing

FMF Racing Hex Q4 Quietcore S/A Insert

SKU: FMF040671

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

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Car Wheel Size Chart

Wheel Diameter (inches)	Tire Width (mm)	Aspect Ratio	Rim Width (inches)
14	185	65	5.5
15	195	60	6.0
16	205	55	6.5
17	215	50	7.0
18	225	45	7.5
19	235	40	8.0
20	245	35	8.5

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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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 Hex Q4 Quietcore Spark Arrestor Insert

Fine-tune the sound and performance of your FMF exhaust system with the FMF Racing Hex Q4 Quietcore Spark Arrestor Insert. This accessory is designed to reduce the overall sound output of your exhaust, making it quieter for trail riding or meeting local noise regulations, without significantly sacrificing performance. The integrated spark arrestor screen also ensures compliance with US Forest Service requirements, making it a versatile addition for off-road enthusiasts.

Quieter Operation and Spark Arresting

The Q4 Quietcore insert utilizes a unique design to baffle sound waves, effectively lowering the decibel level of your exhaust. It's engineered to work seamlessly with FMF's Q4 line of mufflers and other compatible FMF exhaust systems. Installation is straightforward, allowing you to quickly modify your exhaust's acoustics. The durable construction ensures it can withstand the heat and vibration associated with high-performance engines.

Key Features:

Reduces exhaust sound output for quieter operation.
Includes a USFS-approved spark arrestor screen.
Designed to work with FMF Q4 mufflers and compatible systems.
Helps meet noise regulations for trail riding.
Minimal impact on overall performance.
Durable construction for longevity.
Easy installation.
Universal fit for compatible FMF mufflers.

If you're looking to quiet down your ride or ensure you meet spark arrestor requirements, the FMF Racing Hex Q4 Quietcore Insert is an excellent solution. Enhance your off-road experience with quieter, compliant performance. Find this and other FMF accessories at GGCRACING.