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S&S 124" Power Package with Gear Drive Cams

Item: 359386

$2960.96 – $3326.36

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S&S 124" Power Package with Gear Drive Cams


The 124" Power Package is the ideal combination of performance and savings to transform your Milwaukee 8 Harley Davidson without breaking the bank. Bump the M8 from a 107" power plant to that of a 124" killer as well as adding matched cams/cam plate/oil pump and everything else a high performance cam chest needs to reliably make big power.

  • Wrinkle Black Finish jugs
  • Bolt-on kit
    • No case machining required
  • 4.250" bore
  • Forged pistons
  • 11.1 compression ratio

Oil Pump and Cam Plate

  • Precision machined from billet aluminum
  • Passage plugs removable for servicing
  • Independent scavenge sections for flywheel cavity and cam chest
  • Debris screens in both scavenge pickups
  • Magnet in cam chest to help to stop debris from entering oil pump
  • Increased flow capacity on both feed and scavenge side
  • Pressure relief valve is adjustable with unit installed in engine

Pushrods

  • Quickee pushrods help to ease installation
  • Comes with pushrod tubes

Tappets

  • S&;S premium tappets
  • Hard-anodized, billet aluminum tappet cuffs
  • Tappet cuffs stronger than stock
    • Eliminate distortion
    • Improves tappet stability at higher RPMs

Cam

  • S&S 550 cam specifically engineered for big bore application
  • Gear drive cam provides improved timing accuracy
  • Eliminates stock chain tensioner mechanism
  • Includes outer cam drive gears

Valve Springs

  • Performance valve springs suitable for up to .605" lift
  • High-performance conical single wire spring design
  • Includes top collars, keepers, and valve seals/bottom collars

All components made in the USA

Specification Details
Bore 4-1/4 in.
Color Varies (make selection above)
Compression Ratio 11.1:1
Country of Origin USA
Displacement 124CI
Drive Type Gear Drive
Engine Type Milwaukee Eight
Exhaust Duration 273.1 degrees front/277.8 degrees rear
Exhaust Lift .232 in. front/.264 in. rear
Exhaust Lobe Center 106 degrees front/100.5 degrees rear
Exhaust Timing (Close) 30.5 degrees front/38.4 degrees rear
Exhaust Timing (Open) 62.5 degrees front/59.4 degrees rear
Finish Varies (make selection above)
Intake Duration 218.9 degrees front/214.2 degrees rear
Intake Lift .127 in. front/.099 in. rear
Intake Lobe Center 100 degrees front/104 degrees rear
Intake Timing (Close) 29.4 degrees front/31.1 degrees rear
Intake Timing (Open) 9.4 degrees front/3.1 degrees rear
Valve Lift .550 in.

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Harley Davidson
  • FLHR Road King 2017-2021
  • FLHRXS Road King Special 2017-2023
  • FLHTCU Electra Glide Ultra Classic 2017-2019
  • FLHTCUTG Tri Glide Ultra Classic 2017-2024
  • FLHTK Electra Glide Ultra Limited 2017-2023
  • FLHTKL Electra Glide Ultra Limited Low 2017-2019
  • FLHX Street Glide 2017-2023
  • FLHXS Street Glide Special 2017-2023
  • FLRT Freewheeler 2017-2022
  • FLTRU Road Glide Ultra 2017-2019
  • FLTRXS Road Glide Special 2017-2023

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Questions & Answers

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Do you have to upgrade heads on motor as well

So do you have to change out factory heads to something else to make work or will kit work with factory heads?

This particular kit is designed to work with the stock cylinder head on all of the models it's listed to fit. You'll certainly obtain a great power boost upon installing and properly tuning your ECU to work with it. No less, if you wanted to get even more performance out of it, there's no harm in having your heads modified for more flow by a competent tuner.

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