DIRT BIKE

Part Description: The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology? both internally and externally In addition, achieves a shorter overall length that is less susceptible to crash damage and complementary to Factory Forward Engineering - moving the muffler closer to the motor to centralize mass The Factory 4.1 RCT is constructed from only aerospace grade materials that meet exacting specifications and is manufactured 100% at the Southern California factory Includes the spark arrestor and quiet insert (94dB)

Part Description: The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology? both internally and externally In addition, a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering - moving the muffler closer to the motor to centralize mass The Factory 4.1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory Spark arrestor and quiet insert (94db) included

Part Description: The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology? both internally and externally In addition, achieves a shorter overall length that is less susceptible to crash damage and complementary to Factory Forward Engineering - moving the muffler closer to the motor to centralize mass The Factory 4.1 RCT is constructed from only aerospace grade materials that meet exacting specifications and is manufactured 100% at the Southern California factory Spark arrestor and quiet insert (94dB) included

Part Description: Overall increase in power and torque Durable stainless steel and aluminum construction Space Age internal packing material for maximum longevity Internal shape of core uses Hi-Flo technology Includes removable spark arrestor Enhanced sonic evacuation provides for higher flow and increased power

Part Description: The Q4 employs intricate chambers, baffles and proprietary multistage packing material Less sound equals more ground Power gains throughout the entire RPM range Meets USFS and FIM World Enduro sound regulations Rugged design for off-road endurance Spark arrestor included Pounds lighter than stock Made in the USA

Part Description: For closed course competition use only Used for a single sided exhaust system except for Part # 014553 Improved bottom and mid-range power

Part Description: Improved bottom and mid-range power For closed course competition use only

Part Description: Optional noise damper for the Evolution Line Specially developed for use on racetracks where 109dB/A noise levels are required