Feuling Camchest - Race Series - Reaper 521 - Water Cooled - M8

The Feuling Race Series Camchest adds power and throttle response with a performance cam profile built for your engine.

This is the 521 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 (2017-2026) and Trike (2017-2025) models. Check the fitment chart below to confirm your exact year and model.

Part of the Feuling Race Series line.

• Billet 7075 aluminum oil pump, which is 50% harder and stronger than the factory pump, holding tighter tolerances under temperature
• Short travel hydraulic lifters have 0.115" of total travel and will increase rpm by decreasing valve float and valve-train harmonics while maintaining a quiet engine
• Deeper scavenge kidney ports over the HP+ series for even more scavenge flow volume
• 30% more pressure gear volume over stock for M-Eight Twin-Cooled motors
• 53% more scavenge gear volume over stock for M-Eight Twin-Cooled motors
• 27% more pressure and scavenge gear volume over stock for M-Eight Oil-Cooled motors
• 42% more scavenge volume with port sizing, matched passages and holes to the engine case for M-Eight Twin-Cooled motors and M-Eight Oil-Cooled motors
• 68% more oil volume to the crankshaft and connecting rod bearing for M-Eight Twin-Cooled™ motors and M-Eight Oil-Cooled motors
• 15°-25° cooler engine temperatures for M-Eight Twin-Cooled™ motors and M-Eight Oil-Cooled motors
• 15°-30° cooler oil temperatures for M-Eight Twin-Cooled™ motors and M-Eight Oil-Cooled motors
• 10-30 more psi of oil pressure for M-Eight Twin-Cooled™ motors and M-Eight Oil-Cooled motors
• Increases oil pressure, scavenge volume and engine oil flow
• Reduces wet sumping, blowby and oily air cleaners
• Magnets in oil pump to help protect gears and pressure relief valve
• Test results show 2 hp gain and 2 ft/lb of TQ gain to the rear wheel on M-Eight
• Feuling test results show a 50% reduction of engine sump oil level
• Kit includes: Race Series® high volume oil pump, High Flow billet camplate, Reaper® Series camshaft, Race Series® short hydraulic roller lifters, one piece pushrods, Timken®/ Koyo® cam bearings, rocker arm studs/ nuts, gaskets, O-rings, ARP® cam/ crank fasteners, washers, moly paste and Loctite®
• Made in the USA
• Not for '23-'26 models with 121" VVT motor.