FMF Powercore 4 Muffler 044015 FMF044015 Rebuild Kit Cut-Off Valve This combined kit features two

This combined kit features two parts of the LINK™ exhaust system options for your R1 including the slip-on and cat eliminating Y pipe

and springs

and most include top and bottom seals

- Stainless exhaust port spigots

Anti-fog coated polycarbonate lens with anti-stock dots

FMF Powercore 4 Muffler 044015 FMF044015 Rebuild Kit Cut-Off Valve This combined kit features twoFMF developed the PowerCore 4 to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding Aluminum construction and stainless steel Hi Flo endcaps make for the perfect balance of performance and strength Removable spark arrestor included