Description
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
The Grim Reaper aggressive pulling power with a nasty sound
This camshaft revs up faster than the 521 grind, sounds nastier and pulls harder, but is more difficult to tune
The Reaper 508 grind will shine in 114? and larger cubic inch engines with added compression ratio
Ported cylinder heads are not required, but will complement the cam and add even more pulling power throughout the range
The stock throttle body produces an excellent powerband and use of a high flow throttle body will increase peak power numbers
A high-flow exhaust system and air cleaner is highly recommended for optimal performance
High-lift valve springs are required
Heavy-duty pushrods are highly recommended
2250 – 5900 rpm range
Made in the U.S.A.
Due to the unstable nature of this 4-valve engine design with one rocker arm activating two valve springs, Feuling highly recommends running one-piece pushrods over quick-install adjustable pushrods to maintain maximum cam/ valve lift and reduce valvetrain harmonics and associated hydraulic lifter issues
Additional information
| Fairing Style | 14+ Batwing, 15+ RoadGlide |
|---|---|
| Motor | Milwaukee Eight |
| Make | Harley-Davidson |
| Family | Softail, Touring |
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