Feuling Reaper 521 Cam for 2017-2020 Harley M8

The 521 Reaper Cam from Feuling for the Harley Softail M8 motor. This Cam is designed to compliment 114" or larger cubic in engines with added compression. High flow exhaust and air cleaner combo is highly recommended for the best performance. Requires high lift valve springs.

Fits: 2017-2020 Harley M8 Models

• Aggressive pulling power with a "nasty" sound, the Reaper 521 grind will shine in 114" and larger cubic inch engines with added compression ratio
• Requires high lift valve springs; PART #0926-2973 or 0926-2974
• Stock throttle body produces an excellent powerband; use of a high-flow throttle body may increase peak power numbers
• 2250 - 6250 rpm range
• Ported cylinder heads are not required, but will complement the cam and add even more pulling power throughout the range
• 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
• Heavy-duty one-piece pushrods are also highly recommended; see PART #0928-0091

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 #3047 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.

DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES.