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Product Details

Feuling 521 Race Series Cam Chest Kit For Harley Oil Cooled Milwaukee-Eight

These combination kits not only ensure each individual part is designed to work and function together but to do so in total harmony. Feuling camchest kits include all necessary components from top to bottom of the camchest. They take the guess work out of the ordering process and guarantees the engine builder maximum reliability, peak performance and the coolest engine and oil temperatures obtainable. Kits include a Race Series billet 7075 aluminum oil pump which is 50% harder and stronger than the factory pump holding tighter tolerances under temperature, Race Series hydraulic lifters that 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 Milwaukee Eight front exhaust camshaft lobe flange, and a High Flow billet 7075 aluminum camplate.

Features

  • Quieter and smoother engine operation
  • Increase oil pressure, scavenge volume and engine oil flow
  • 27% more pressure and scavenge gear volume over stock
  • 42% more scavenge volume with port sizing, matched passages and holes to the engine case
  • 68% more oil volume to the crankshaft and connecting rod bearing
  • 15-25° cooler engine temperatures
  • 15-30° cooler oil temperatures
  • 10-30 more PSI of oil pressure
  • 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

521 Cam Info:

521 Cam has 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. 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. RPM range 2,250-6,250

  • Intake open/close 17°/34
  • Exhaust open/close 51.5°/11.5°
  • Intake duration 231°
  • Exhaust duration 243°
  • Intake Lift .518"
  • Exhaust Lift .521"
Made in the USA
Product Style J&P Cycles Item # Catalog Number Store Sku MFR. Product # Availability
Product Style Chain Drive / One-piece pushrods J&P Cycles Item #10026499 Catalog Number10026499 Store Sku MFR. Product #7262 AvailabilityOut of Stock
Product Style Chain Drive / Short Travel Lifters / One-piece pushrods J&P Cycles Item #10365365 Catalog Number10365365 Store Sku MFR. Product #7262ST AvailabilityOut of Stock
Please review this product's fitment notes & exceptions prior to purchase: Add to Cart

This product DOES NOT FIT your 2006 Yamaha XVS650A V Star Classic

Fitment Notes & Exceptions
  • High lift valve springs are required on stock cylinder heads. Heavy duty one piece pushrods are also highly recommended.
This Product Fits
Harley Davidson
Electra Glide Standard FLHT 2019, 2020, 2021, 2022
Electra Glide Ultra Classic FLHTCU/I 2017, 2018, 2019
Freewheeler FLRT 2017-2025
Road Glide 3 FLTRT 2023, 2024, 2025
Road Glide CVO/SE FLTRXSE 2018, 2019, 2020, 2021, 2022
Road Glide FLTRX 2017-2023
Road Glide Special FLTRXS 2017-2023
Road Glide ST FLTRXST 2022, 2023
Road King FLHR/I 2017-2022
Road King Special FLHRXS 2017-2025
Softail Breakout 114 FXBRS 2018, 2019, 2020
Softail Breakout 117 FXBR 2023, 2024, 2025
Softail Breakout FXBR 2018, 2019
Softail Deluxe FLDE 2018, 2019, 2020
Softail Fat Bob 114 FXFBS 2018-2023
Softail Fat Bob FXFB 2018, 2019
Softail Fat Boy 114 FLFBS 2018-2024
Softail Fat Boy FLFB 2018, 2019, 2025
Softail FXDR 114 FXDRS 2019, 2020
Softail Heritage Classic 114 FLHCS 2018-2024
Softail Heritage Classic FLHC 2018, 2019, 2020, 2021, 2025
Softail Low Rider FXLR 2018, 2019, 2020
Softail Low Rider S FXLRS 2020-2025
Softail Low Rider ST FXLRST 2022, 2023, 2024, 2025
Softail Slim FLSL 2018, 2019, 2020, 2021
Softail Sport Glide FLSB 2018, 2019, 2020, 2021
Softail Standard FXST 2020, 2021, 2022, 2023, 2024
Softail Street Bob 114 FXBBS 2021, 2022, 2023, 2024
Softail Street Bob FXBB 2018, 2019, 2020, 2025
Street Glide CVO/SE FLHXSE 2017-2022
Street Glide FLHX/I 2017-2023
Street Glide Special FLHXS 2017-2023
Street Glide ST FLHXST 2022, 2023
This item is also available for 13 different vehicles. View All Models

Feuling 521 Race Series Cam Chest Kit For Harley Oil Cooled Milwaukee Eight 2017-2025 Instructions

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