Benefits of using Thunder Torque Inserts™ are:

-Reduction in reversion

-Most low and mid-range torque increase per dollar spent

-Deeper tone/sound


 The Thunder Torque Inserts™ reduce reversion and increase torque by reducing engine

pumping losses, increasing exhaust gas velocity, and increasing inertial scavenging

 They also give deeper, throatier sound/rumble all the way through the RPM and throttle

range. Plus, they are essentially a universal part which can be used in all exhaust systems and

sizes, stock or aftermarket.


Check out this video-


Go HERE to See  More Info on Thunder Torque Inserts™

Go HERE to See a Report on How Harley Exhaust Works