Exhaust Port Torque Cones 1999-Later Harley Sportster Evolution EVO Engines and Twin Cam Models - Stainless Steel - Increases Power and Reduces Reversion on Unbaffled Exhaust Systems - Chopper Bobber;

Torque Cones not only increase power, but they are necessary for unbaffled exhaust systems to reduce reversion. CNC-machined from stainless steel with precise angles for maximum effect. Improve power by increasing the exhaust gas velocity. Help to reduce exhaust reversion. Great for use with un-baffled exhaust systems that require some type of back pressure to run right. Simple installation requiring no permanent modification. Extra exhaust port gaskets are NOT required. Fits 1999-Later Harley Evolution (EVO) and Twin Cam Models. Sold in pairs NOTE: Will not fit Twin Cam 10-up with OEM headpipes Finish: Machined Stainless Steel Dimensions: OD - 1-7/8" OD - 1.31" (Smallest Taper) Top to Bottom - 1-1/4" Fitment: Fits 1999-Later Harley Evolution (EVO) and Twin Cam Models. NOTE: Will not fit Twin Cam 10-up with OEM headpipes