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Motorcycle > Driveline
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:
72.2 Horsepower
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.
Mikuni Carburettors
MW-42-422 HSR 42MM CARB ONLY, NO CHOKE CABLE $546.68
MW-42-423 HSR 42MM CARB ONLY, POLISHED W/CHOKE $772.56
MW-42-432 AIRBOX ADAPTER KIT $27.38