FMF - ATV 4-Stroke 4.1 Complete System

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FMF - 4.1 Exhaust System

• The Factory 4.1 is FMF Racing’s premier ATV exhaust.  With 30 years of racing experience behind it, the Factory 4.1 takes advantage of everything we’ve learned on the race track, and guaranteed to produce more horsepower throughout the entire RPM range.  The Factory 4.1 is perfect for the track or the dunes.  Bolt one on for instant performance and style.
• Horsepower gains throughout RPM range
• Advanced engineering and patent pending design
• Optional quiet insert (-3dB) and spark arrestor
• Titanium construction with durable stainless steel midpipe
• Available in natural or anodized titanium
• Use with stock or FMF header; easily serviced for repacking