FMF 041516 HEX Slip-On Muffler with Spark Arrestor - Q4

The FMF Q4 HEX Slip-On Muffler represents the next evolution in high-performance quiet exhaust technology for off-road motorcycles. Engineered to deliver exceptional power gains throughout the entire RPM range while maintaining low sound levels, this muffler proves you don't need to sacrifice performance for sound compliance.

Advanced Acoustic Engineering:

• Intricate internal chambers and baffles precisely positioned to absorb sound
• Proprietary multistage packing material for extended durability
• Twin-stage core design reduces sound output while maintaining exhaust flow
• Meets U.S. Forest Service and FIM World Enduro sound regulations
• Sound levels typically below 96 decibels, with some applications as low as 92 decibels

Construction and Materials:

• Aluminum muffler body with natural finish
• Stainless steel mid-pipe for corrosion resistance
• Stainless steel hex-shaped end cap
• Rugged design built for off-road endurance
• Significantly lighter than stock exhaust systems
• Made in the USA

Performance Features:

• Power gains across the entire RPM range without sound penalties
• Improved exhaust flow over sound-restricted stock mufflers
• Compatible with FMF or stock OEM headers
• No restrictive inserts required for compliance

What's Included:

• Q4 HEX muffler assembly (aluminum body with stainless mid-pipe and end cap)
• U.S. Forest Service approved spark arrestor screen (pre-installed)
• Installation instructions
• All necessary mounting hardware

Developed through years of championship off-road racing experience, the Q4 HEX delivers the performance serious riders demand while helping preserve trail access. For closed course competition use only.