Description
Feuling Reaper 521 Camshaft for Harley Milwaukee Eight 2017-Up
Please read the manufacturer's note before purchasing...
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
- Aggressive pulling power with a "nasty" sound, the Reaper 521 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
- Stock throttle body produces an excellent powerband; use of a high-flow throttle body may increase peak power numbers
- A high-flow exhaust system and air cleaner is highly recommended for optimal performance
- Feuling recommends matching 521 cam with Race Series oiling system PART #0932-0199
- High-lift valve springs are required on stock cylinder heads; see Feuling Beehive valve spring kit PART #s 0926-2973 or 0926-2974
- Heavy-duty one-piece pushrods are also highly recommended; see PART #0928-0091
- RPM range 2250 - 6250
- Made in the U.S.A.
| Grind | Valve Lift | Open | Close | Duration @ .053" | Lift @ TDC | Lobe Centerline |
| Intake | .518 | 17° | 34° | 231° | .162" | 98.5° |
| Exhaust | .521 | 51.5° | 11.5° | 243° | .125" |
110° |
Important Manufacturer's Note:
NOTE: Screamin' Eagle® cylinder heads have high-lift valve springs and do accept the 521 grind cam.
NOTE: 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.
NOTE: Feuling fastener kit PART #2401-0994 also highly recommended to help prevent cylinder head cracking; kit replaces the rocker shaft bolts with studs and nuts to help reduce the stress of the rocker shaft standoffs.
