Factory4.1 SL (Slip-On) 041291 Size:OS • -Complete Aluminum and Stainless

• -Complete Aluminum and Stainless Steel construction • -Optimally designed to complement performance of FMF pipes

•    Self-cleaning canister with integrated film wipe reduces mud build up

this system delivers a significant reduction in weight while improving overall power and throttle response

The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams

Factory4.1 SL (Slip-On) 041291 Size:OS • -Complete Aluminum and StainlessThe Factory 4. 1 is FMF Racing's premier performance exhaust. With 30 years of racing experience behind it, the Factory 4. 1 takes advantage of everything we've learned on the race track. Available in natural or blue anodized finish. Horsepower gains throughout RPM range. Available with titanium or high strength stainless steel midpipe. 94dB Insert Included