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The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology both internally and externally. It starts at the center with a new core - a patent pending shape enhances and refines the exhaust pressure wave for optimal power output while lowering the sound level. In addition, it achieves a shorter overall length that is less susceptible to crash damage and complementary to the Factory Forward Engineering - moving the muffler(s) closer to the motor to centralize mass. Visible changes to the exterior include a redesigned canister to increase internal capacity for the maximum volume of packing material. The packing itself was not overlooked - a proprietary blend formulated for superior durability and sound attenuation. The final component is a new rear endcap engineered for simple tuning adjustments incorporating a snap ring feature to secure the standard and optional inserts.
The Factory 4.1 RCT is constructed from only aerospace-grade materials that meet FMF's exacting specifications and 100% manufactured at their Southern California factory.
Note: For closed course competition use only. Not intended for street use.
|Product Variant||Manufacturer Part #|
|Aluminum With Carbon Fiber End Cap||044464, 045647|
|Aluminum With Stainless Steel Mid Pipe||041517, 045472|
|Aluminum With Stainless Steel Mid Pipe And Carbon Fiber End Cap||042291, 041473, 043364, 042394, 044443, 042290, 044382, 043320, 044453, 045594, 042369, 044383, 042330, 041507, 042292, 041602, 044427, 043347, 045632, 045558|
|Aluminum With Stainless Steel Mid Pipe And Carbon Fiber End Cap and Side Panel||041559, 041525|
|Aluminum with Carbon Fiber End Cap||045628|
|Blue Anodized Titanium With Carbon End Cap||041546, 042396, 041603|
|Blue Anodized Titanium With Carbon Fiber End Cap||044409, 045668, 044466, 045586, 045648|
|Blue Anodized Titanium With Titanium Mid Pipe||045596, 044429|
|Blue Anodized Titanium With Titanium Mid Pipe And Carbon Fiber End Cap||042267, 042286, 044455, 042371, 042259, 044365, 045561, 044400, 045570|
|Stainless Steel with Carbon End Cap||042374|
|Stainless Steel with Carbon Fiber Cap||043372|
|Titanium Anodized with Carbon Fiber Cap||043373, 042376, 045629, 045633|
WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. For more information, go to www.P65Warnings.ca.gov.