Exhaust Reversion Torque Cones For Harley Twin Cam & Evolution Big Twin, Sportster
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Exhaust Port Torque Cones All Evo Models Big Twin & Sportster All Years & Twin Cams 1999/Later
Fits all Evolution models, all years & Twin Cam 1999/Later
Improves power by increasing the exhaust gas velocity and helps to reduce exhaust reversion
CNC machined with precise angles for maximum effect
Great for use with unbaffled exhaust that require some type of back pressure to run right
Simple installation requiring no permanent modification