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FMF Racing (Flying Machine Factory)

FMF Q4 Spark Arrestor Slip-On Exhaust

SAVE 4%

Photo 1 of 3 | Click to Enlarge

FMF Q4 Spark Arrestor Slip-On Exhaust - View 1

Product OverviewOEM Verified Specifications

The FMF Q4 Spark Arrestor Slip-On represents a precision-engineered solution for riders demanding strict USFS compliance without sacrificing the aggressive performance characteristics of a high-flow exhaust system. Constructed with FMF’s signature metallurgical standards, this slip-on is designed to integrate seamlessly with existing header systems, ensuring that the primary exhaust pulse remains unimpeded while the terminal canister handles the critical task of spark containment. The architecture is tailored for off-road and trail applications where regulatory adherence is non-negotiable, yet the demand for maximum horsepower and torque gains remains the primary engineering objective. By sourcing through authorized distributor channels, this unit guarantees authentic FMF quality control, ensuring that the internal components are manufactured to exact tolerances required for consistent performance under high-stress conditions.

Gas flow dynamics within the Q4 are optimized to maintain optimal exhaust gas velocity, allowing the engine to breathe efficiently while scavenging spent gases from the combustion chamber. The internal baffle and core engineering are specifically tuned to manage backpressure, striking a delicate balance between the restrictive nature required for spark arrestor functionality and the free-flowing characteristics necessary for peak power delivery. This design minimizes the acoustic signature associated with traditional spark arrestors, delivering a controlled sound profile that dissipates noise effectively without the harsh, droning resonance often found in inferior aftermarket units. The result is a measurable improvement in throttle response and mid-range torque, as the system reduces the parasitic drag imposed by restrictive OEM factory mufflers, allowing the engine to operate closer to its theoretical efficiency limits.

Thermal management and mechanical durability are central to the Q4’s design, ensuring reliable service life in the most demanding trail and track environments. The canister is built to withstand the extreme heat cycles inherent to high-RPM operation, with robust construction that resists warping and corrosion over time. Fitment tolerances are engineered to align with standard factory mounting points, ensuring secure installation and proper clearance from suspension components and bodywork. This rugged durability is backed by the standard manufacturer warranty, reflecting FMF’s confidence in the long-term structural integrity of the unit. For the serious rider, the Q4 provides the peace of mind that comes with a compliant, high-performance exhaust system that is built to endure the abuse of daily trail use and competitive racing alike.

Product Classification

Exhaust Baffle & Spark Arrestor InsertHARD PARTS > Exhaust Systems & Performance Mufflers > Exhaust Baffles, Inserts & Spark Arrestors

Unit / Package Weight

6.9 lbs (3.13 kg)

Discipline & Application

Hard Parts & Mechanical

$482.49

$499.99SAVE 4%

Available

Select Fitment / Application: MUFFLER HEX Q4 S/A HON - 041544 (Part #1831-0676)

Proceed to Checkout

Free US ShippingOrders over $150

30-Day ExchangesHassle-free size swap

Manufacturer WarrantyStandard Manufacturer Warranty

Product OverviewOEM Verified Specifications

Product Classification

Exhaust Baffle & Spark Arrestor InsertHARD PARTS > Exhaust Systems & Performance Mufflers > Exhaust Baffles, Inserts & Spark Arrestors

Unit / Package Weight

6.9 lbs (3.13 kg)

Discipline & Application

Hard Parts & Mechanical

FMF Racing (Flying Machine Factory) Technical Performance & Engineering

Key engineered features, technical highlights, and manufacturer specifications

Authentic Specifications

Safety & Protection (7)

OEM Technical Standards

By sourcing through authorized distributor channels, this unit guarantees authentic FMF quality control, ensuring that the internal components are manufactured to exact tolerances required for consistent performance under high-stress conditions.
Gas flow dynamics within the Q4 are optimized to maintain optimal exhaust gas velocity, allowing the engine to breathe efficiently while scavenging spent gases from the combustion chamber.: The internal baffle and core engineering are specifically tuned to manage backpressure, striking a delicate balance between the restrictive nature required for spark arrestor functionality and the free-flowing characteristics necessary for peak power delivery.
This design minimizes the acoustic signature associated with traditional spark arrestors, delivering a controlled sound profile that dissipates noise effectively without the harsh, droning resonance often found in inferior aftermarket units.
The result is a measurable improvement in throttle response and mid-range torque, as the system reduces the parasitic drag imposed by restrictive OEM factory mufflers, allowing the engine to operate closer to its theoretical efficiency limits.
Fitment tolerances are engineered to align with standard factory mounting points, ensuring secure installation and proper clearance from suspension components and bodywork.
This rugged durability is backed by the standard manufacturer warranty, reflecting FMF’s confidence in the long-term structural integrity of the unit.
For the serious rider, the Q4 provides the peace of mind that comes with a compliant, high-performance exhaust system that is built to endure the abuse of daily trail use and competitive racing alike.

Materials & Construction (3)

OEM Technical Standards

The FMF Q4 Spark Arrestor Slip-On represents a precision-engineered solution for riders demanding strict USFS compliance without sacrificing the aggressive performance characteristics of a high-flow exhaust system.: Constructed with FMF’s signature metallurgical standards, this slip-on is designed to integrate seamlessly with existing header systems, ensuring that the primary exhaust pulse remains unimpeded while the terminal canister handles the critical task of spark containment.
The architecture is tailored for off-road and trail applications where regulatory adherence is non-negotiable, yet the demand for maximum horsepower and torque gains remains the primary engineering objective.
Thermal management and mechanical durability are central to the Q4’s design, ensuring reliable service life in the most demanding trail and track environments.: The canister is built to withstand the extreme heat cycles inherent to high-RPM operation, with robust construction that resists warping and corrosion over time.

Additional Features & Specifications (3)

OEM Technical Standards

Authentic FMF Q4 Spark Arrestor Slip-On Exhaust
Precision-engineered for optimal exhaust gas velocity, maximum horsepower and torque gains, and rugged durability
Sourced through authorized distributor channels

End of Product Information

Complete Your Setup

Frequently Paired Accessories & Tools

FMF RACING

FMF 4-Stroke Premier Muffler Repack Kit

FMF RACING

FMF Spring Tool

BOLT

BOLT Euro Style Chain Slider Bushings

SUPERCLAMP

SUPERCLAMP Super-Glides II

KOLPIN

KOLPIN Lock-It-Rite ATV/UTV Truck Receiver System

KOLPIN

KOLPIN Lock-It-Rite ATV/UTV Trailer System

SUPERCLAMP

SUPERCLAMP Super-Glide Edge Rail Trim Kit

SUPERCLAMP

SUPERCLAMP Super-Glides II Screw Kit

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Factory Technical Reference

Verified Workshop Blueprints & Maintenance Specs

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Harley-Davidson · 2017–2024

Road Glide / Street Glide M8

Milwaukee-Eight 107/114/117ci

4.0 qt 20W-50 | Formula+ Primary | 80W-140 Trans

Yamaha · 2020–2025

Ténéré 700 (T7)

689cc CP2 Crossplane Twin

2.6 L 10W-40 | 525 Chain | 90/90-21 & 150/70R18

Honda · 2020–2025

CRF1100L Africa Twin

1084cc Unicam Parallel Twin

4.0L Manual / 4.2L DCT | SILMAR8A9S Iridium

Kawasaki · 2019–2025

Ninja ZX-6R (636)

636cc DOHC Inline-Four

3.6 L 10W-40 | 520 Chain (112L) | 127 N·m Axle

Polaris · 2019–2025

RZR XP 1000 / XP 4

999cc ProStar DOHC Twin

2.5 qt PS-4 5W-50 | AGL Trans | Demand Drive

Can-Am · 2018–2025

Maverick X3 Turbo / Turbo R

Rotax ACE 900cc Turbocharged

3.5 L 0W-40 | QRS-X CVT | 75W-140 Gearbox

Polaris · 2018–2025

General 1000 / XP 1000

999cc ProStar 100 HP Twin

2.5 qt PS-4 5W-50 | 122 N·m Lug | AGL Gearcase

Can-Am · 2020–2025

Defender HD10 / MAX

Rotax 976cc V-Twin 82 HP

2.2 L 5W-40 | 100 N·m Lug | PRO-TORQ CVT

Verified Technical Reference

Frequently Asked Questions

Consult the authentic option and part number matrix under the Technical Specifications and Fitment tab. You can match the authentic OEM Manufacturer Part Number (MPN) or ride model specifications to confirm exact compatibility.

FMF Racing (Flying Machine Factory)

FMF Q4 Spark Arrestor Slip-On Exhaust

SAVE 4%

Photo 1 of 3 | Click to Enlarge

Product OverviewOEM Verified Specifications

Product Classification

Exhaust Baffle & Spark Arrestor InsertHARD PARTS > Exhaust Systems & Performance Mufflers > Exhaust Baffles, Inserts & Spark Arrestors

Unit / Package Weight

6.9 lbs (3.13 kg)

Discipline & Application

Hard Parts & Mechanical

$482.49

$499.99SAVE 4%

Available

Select Fitment / Application: MUFFLER HEX Q4 S/A HON - 041544 (Part #1831-0676)

Proceed to Checkout

Free US ShippingOrders over $150

30-Day ExchangesHassle-free size swap

Manufacturer WarrantyStandard Manufacturer Warranty

Product OverviewOEM Verified Specifications

Product Classification

Exhaust Baffle & Spark Arrestor InsertHARD PARTS > Exhaust Systems & Performance Mufflers > Exhaust Baffles, Inserts & Spark Arrestors

Unit / Package Weight

6.9 lbs (3.13 kg)

Discipline & Application

Hard Parts & Mechanical

FMF Racing (Flying Machine Factory) Technical Performance & Engineering

Key engineered features, technical highlights, and manufacturer specifications

Authentic Specifications

Safety & Protection (7)

OEM Technical Standards

By sourcing through authorized distributor channels, this unit guarantees authentic FMF quality control, ensuring that the internal components are manufactured to exact tolerances required for consistent performance under high-stress conditions.
Gas flow dynamics within the Q4 are optimized to maintain optimal exhaust gas velocity, allowing the engine to breathe efficiently while scavenging spent gases from the combustion chamber.: The internal baffle and core engineering are specifically tuned to manage backpressure, striking a delicate balance between the restrictive nature required for spark arrestor functionality and the free-flowing characteristics necessary for peak power delivery.
This design minimizes the acoustic signature associated with traditional spark arrestors, delivering a controlled sound profile that dissipates noise effectively without the harsh, droning resonance often found in inferior aftermarket units.
The result is a measurable improvement in throttle response and mid-range torque, as the system reduces the parasitic drag imposed by restrictive OEM factory mufflers, allowing the engine to operate closer to its theoretical efficiency limits.
Fitment tolerances are engineered to align with standard factory mounting points, ensuring secure installation and proper clearance from suspension components and bodywork.
This rugged durability is backed by the standard manufacturer warranty, reflecting FMF’s confidence in the long-term structural integrity of the unit.
For the serious rider, the Q4 provides the peace of mind that comes with a compliant, high-performance exhaust system that is built to endure the abuse of daily trail use and competitive racing alike.

Materials & Construction (3)

OEM Technical Standards

The FMF Q4 Spark Arrestor Slip-On represents a precision-engineered solution for riders demanding strict USFS compliance without sacrificing the aggressive performance characteristics of a high-flow exhaust system.: Constructed with FMF’s signature metallurgical standards, this slip-on is designed to integrate seamlessly with existing header systems, ensuring that the primary exhaust pulse remains unimpeded while the terminal canister handles the critical task of spark containment.
The architecture is tailored for off-road and trail applications where regulatory adherence is non-negotiable, yet the demand for maximum horsepower and torque gains remains the primary engineering objective.
Thermal management and mechanical durability are central to the Q4’s design, ensuring reliable service life in the most demanding trail and track environments.: The canister is built to withstand the extreme heat cycles inherent to high-RPM operation, with robust construction that resists warping and corrosion over time.

Additional Features & Specifications (3)

OEM Technical Standards

Authentic FMF Q4 Spark Arrestor Slip-On Exhaust
Precision-engineered for optimal exhaust gas velocity, maximum horsepower and torque gains, and rugged durability
Sourced through authorized distributor channels

End of Product Information

Complete Your Setup

Frequently Paired Accessories & Tools

FMF RACING

FMF 4-Stroke Premier Muffler Repack Kit

FMF RACING

FMF Spring Tool

BOLT

BOLT Euro Style Chain Slider Bushings

SUPERCLAMP

SUPERCLAMP Super-Glides II

KOLPIN

KOLPIN Lock-It-Rite ATV/UTV Truck Receiver System

KOLPIN

KOLPIN Lock-It-Rite ATV/UTV Trailer System

SUPERCLAMP

SUPERCLAMP Super-Glide Edge Rail Trim Kit

SUPERCLAMP

SUPERCLAMP Super-Glides II Screw Kit

MPN
DPN1
SKU
UPC	Not Available
MMW
Package Shipping Weight	6.9 lbs
Shipping Box Dimensions	Not Available
Freight Classification Code	SFR
Model	Q4 Spark Arrestor Slip-On Exhaust
Warranty Coverage	Standard Manufacturer Warranty

MPN
DPN1
SKU
UPC	Not Available
MMW
Package Shipping Weight	6.9 lbs
Shipping Box Dimensions	Not Available
Freight Classification Code	SFR
Model	Q4 Spark Arrestor Slip-On Exhaust
Warranty Coverage	Standard Manufacturer Warranty