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Feuling Race Series 508 Camchest Kit for 17-20 M8 Harley Touring Softail FLHX

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  • Feuling®​ complete camchest kits include all necessary components from top to bottom of the camchest conveniently packaged under one part
  • These combination kit not only ensure each individual part is designed to work and function together, but to do so in total harmony
  • These camchest kits take the guess work out of the ordering process and provides the engine builder maximum reliability, peak performance and the coolest engine/oil temperatures obtainable
  • Complete Camchest Kits include: Feuling® ​High Volume Oil pump, High Flow Camplate, Reaper®​ Series camshafts, hydraulic roller lifters, fixed length pushrods, Timken®​/Koyo®​ cam bearings, rocker arm studs/nuts, gaskets, O-rings, ARP®​ cam/crank fasteners, washers, moly paste and Loctite®
  • Race Series® kits include a Race Series® oiling system (billet 7075 oil pump, Race Series® lifters, High Flow billet 7075 aluminum camplate)
  • Billet 7075 aluminum oil pump, which is 50% harder and stronger than the factory pump, holding tighter tolerances under temperature, deeper scavenge kidneys over Fueling HP+ oil pump
  • Deeper scavenge kidney ports over the HP+ series for even more scavenge flow volume
  • Race Series® hydraulic lifters have a full .200" of total travel designed with a slower bleed down rate to handle heavy valve spring pressures, increase engine rpm before valve float and feature increased roller clearance for steep ramped camshafts and clearance for the M-Eight front exhaust camshaft lobe flange.
  • 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 degree cooler engine temperatures for M-Eight Twin-Cooled motors and M-Eight Oil-Cooled motors
  • 15-30 degree 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
  • Increase oil pressure, scavenge volume and engine oil flow
  • Quieter and smoother engine operation
  • Reduces wet sumping, blow by 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/lbs of TQ gain to the rear wheel on Milwaukee Eight
  • Feuling test results show a 50% reduction of engine sump oil level
  • Made in the U.S.A.
  • The Grim Reaper Aggressive pulling power with a nasty sound
  • The Reaper 508 grind will shine in 114" and larger cubic inch engines with added compression ratio
  • The stock throttle body produces an excellent powerband and use of a high flow throttle body will increase peak power numbers
  • This camshaft revs up faster than the 521 grind, sounds nastier and pulls harder, but is more difficult to tune
  • A high-flow exhaust system and air cleaner is highly recommended for optimal performance
  • Feuling recommends matching 508 cam with Race Series®​ oiling system PART #0932-0199
  • High-lift valve springs are required; see Feuling Endurance BeeHive valve spring kits PART #s 0926-2973, #0926-2974 or High-Load valve springs PART #0926-3138 (High-Load requires the use of Feuling Race Series®​ lifters)
  • Heavy-duty pushrods are highly recommended; see PART #0928-0091
  • 2250 - 6250 rpm range
  • Ported cylinder heads are not required, but will complement the cam and add even more pulling power throughout the range


Application Exhaust,Intake
Exhaust Close 17,5°
Exhaust Duration 241,5°
Exhaust Lift 0,511"
Exhaust Open 44°
Grind 508 Series
Intake Close 37°
Intake Duration 237°
Intake Lift 0,508"
Intake Open 20,5°
Model Race Series®
Product Name Camchest Kit
Riding Style Street
Type Chain
Units Kit


Year Model
2018 - 2019 CVO Road Glide Custom FLTRXSE
2017 - 2020 CVO Street Glide FLHXSE
2017 - 2019 Electra Glide Police FLHTPI
2019 - 2020 Electra Glide Standard EFI FLHTI
2017 - 2019 Electra Glide Ultra Classic EFI FLHTCUI
2019 FXDR 114
2017 - 2020 Road Glide Custom FLTRX
2020 Road Glide Limited FLTRK
2017 - 2020 Road Glide Special FLTRXS
2017 - 2020 Road King EFI FLHR
2017 - 2020 Road King Special FLHRXS
2018 - 2019 Softail Breakout 114 FXBRS
2018 - 2019 Softail Breakout FXBR
2018 - 2019 Softail Deluxe FLDE
2018 - 2019 Softail Fat Bob 114 FXFBS
2018 - 2019 Softail Fat Bob FXFB
2018 - 2019 Softail Fat Boy 114 FLFBS
2018 - 2019 Softail Fat Boy FLFB
2018 - 2019 Softail Heritage Classic 114 FLHCS
2018 - 2019 Softail Heritage Classic FLHC
2018 - 2019 Softail Low Rider FXLR
2018 - 2019 Softail Slim FLSL
2018 - 2019 Softail Sport Glide FLSB
2018 - 2019 Softail Street Bob FXBB
2017 - 2020 Street Glide EFI FLHX
2017 - 2020 Street Glide Special FLHXS