Feuling Cam - 508 Series - Reaper - Chain Drive - M8

The Feuling Reaper Cam adds power and throttle response with a performance cam profile built for your engine.

This is the 508 Series grind. See the cam specs for lift, duration and valve events, and confirm your engine's compression and valvetrain are matched to the cam before installing.

Fits Harley-Davidson Touring (2017-2025), Trike (2017-2024) and Softail (2018-2026) models. Check the fitment chart below to confirm your exact year and model.

Part of the Feuling Reaper line.

• 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 USA
• Cam specs measured in the engine on the lifter @ 0.050 using a 1.61 rocker arm ratio.
• 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.