FMF Factory 4.1 Muffler 041593

If you're serious about extracting maximum power from your machine while cutting parasitic weight, the FMF Factory 4.1 Muffler delivers measurable gains across the entire RPM band—without compromise. This is titanium exhaust engineering built on real engineering principles, not marketing hype: proprietary Chamber Core technology concentrates mass intelligently to improve handling and responsiveness. Whether you're on the track or the trail, you're running the lightest, most performance-oriented muffler available.

• Titanium construction, natural or blue anodized
• Titanium end caps included
• Proprietary Chamber Core technology
• Centralized mass design
• Horsepower gains throughout RPM range
• American-made materials
• Customizable performance tuning inserts
• Spark arrestor module compatible
• AMA sound compliant (most models)
• Bolt-on installation (vehicle-specific fitment)
• Extreme lightweight design
• MPN: 041593