Produce more power and torque in the riding rpm range, improving throttle response, acceleration and fuel mileage.

Smooth camshaft lobe ramps are easier on valvetrain components and eliminate excessive valvetrain noise and wear.

Dyno proven and track tested.

Made in the U.S.

Produces a wide powerband that increases torque and horsepower throughout the entire rpm range.

Direct bolt-in replacement for M-Eight engines; can be used with stock valve springs, pushrods, lifters and exhaust.

Will respond well when used with slip-on mufflers or full exhaust system and a high-flow air cleaner.

Feuling recommends mufflers with smaller cores for the best low-rpm power.