Husqvarna High-Flow Slip-On Exhaust | FMF Q4 Hex Muffler

FMF Q4 Hex Slip-On Muffler for Husqvarna: Unleash Silent Power

Engineered specifically for Husqvarna riders seeking a balance of performance and compliance, the FMF Q4 Hex Slip-On Muffler redefines off-road endurance riding with its innovative design and unmatched power delivery. Designed to meet rigorous USFS and FIM World Enduro sound regulations, this muffler allows riders to conquer trails and race courses without compromising on legal requirements—quiet enough to ride anywhere yet powerful enough to dominate demanding terrain.

At its core lies a sophisticated chamber system paired with FMF’s proprietary multistage packing material, which efficiently reduces noise while maximizing exhaust flow across every RPM. The result? A seamless power curve that delivers consistent acceleration from idle to redline, giving you an edge whether tackling technical singletrack or charging through open desert stretches. Unlike louder aftermarket options that may require additional modifications or fail regulatory checks, the Q4 lets you focus on the ride while feeling raw horsepower rather than hearing it.

Crafted for durability in harsh conditions, this muffler features rugged stainless steel construction that withstands impacts and extreme environments common in off-road adventures. Weighing significantly less than stock exhaust systems—up to [X] pounds lighter—it enhances agility without sacrificing strength. Plus, an integrated spark arrestor ensures safety and compliance in fire-prone areas or designated trails where open exhausts aren’t permitted.

For Husqvarna owners competing in endurance events or weekend warriors pushing limits on rough terrain, the Q4 combines lightweight performance with regulatory readiness. Its hexagonal design not only adds a bold aesthetic but also improves heat dissipation during prolonged use.

Why Choose FMF Q4 Over Competitors?
| Feature | FMF Q4 Hex Slip-On | Competitor Products |
|—————————|———————————-|——————————-|
| Weight Savings | Up to [X] lbs lighter | Minimal or none |
| Sound Compliance | Meets USFS/FIM Enduro standards | Often exceeds legal limits |
| Power Delivery | Smooth gains across all RPMs | Peak-only performance boosts |
| Construction Quality | Durable U.S.-made stainless steel| Lower-grade materials |
| Spark Arrestor Included| Yes | Optional add-on required |

Whether you’re racing in remote regions or exploring backcountry trails where noise restrictions apply, the FMF Q4 Hex Slip-On delivers enduro-ready power silently—so you can ride farther and faster without drawing unwanted attention or violating regulations. Built to endure punishing conditions while staying light on your bike’s chassis, this muffler is a must-have upgrade for Husqvarna riders prioritizing both performance and practicality on every adventure.