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.

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

Customer Reviews

Write Review

Be the first to review this product. How many stars would you give this product?

Questions & Answers

Ask Question

Do you have to upgrade heads on motor as well

By Anon.

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.

By Staff

Answer Question

Have a question? Please ask our experts and customers who own this product.

Ask Question

S&S 124" Power Package with Gear Drive Cams

Select Your Vehicle - Fitment Guaranteed