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Factory4.1 System

The Factory 4.1 exhaust system with the Powerbomb header is FMF's premier exhaust system. This system is perfect for the track or dunes, and is used by factory teams such as KTM, Epic Can-Am and Rath Racing. The Powerbomb header is made of durable stainless steel to withstand any abuse.

Huge horsepower gains throughout RPM range

Advanced engineering and patent pending design

Available in natural or blue anodized finish