Twin Cam Performance:
The simple addition of an HSR42 "Easy Kit" together with high flow air cleaner and exhaust modifications can increase power by 25%. Here is a typical result:
80.7 ft./lbs Torque
The Easy Kit dramatically improves the power of the H-D Twin Cam engine and delivers unmatched throttle response and acceleration! Maximum horsepower is typically increased from 58-60 to 72-75 HP, and Max torque from 71-73 to 81-85 ft/lbs. This example "before and after" power increase was produced with the combination of the Mikuni HSR42, a Screamin' Eagle Air Filter and a set of (loud) Screamin' Eagle mufflers.