S&S 0925-1360 - 310-1012B Cam Chest Kit for M-Eight Engine for Harley-Davidson Engines

S&S Cycle 310-1012B 475C Camchest Kit – Milwaukee-Eight Oil-Cooled (2018-2021)

Warning: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION-CONTROLLED MOTOR VEHICLE. WE CAN NOT SHIP TO CALIFORNIA – no exceptions, no work-arounds, no tears.

Unleash the nastiest, rowdiest, most torque-drunk 475 cam S&S has ever crammed into an oil-cooled M8. This isn’t a “mild upgrade.” This is a full-on assault on the factory cam chest that turns your 114 or 114 into a snarling, pavement-ripping beast that scares sportbikes at stoplights.

What’s in the box (everything you need, nothing you don’t):

• Billet aluminum, blue-anodized S&S oil pump & cam plate – independent scavenge sections, debris screens, built-in magnet, removable plugs, and a fully adjustable bypass you can dial with the pump still in the motor
• S&S High-Performance hydraulic cam chain tensioner (say goodbye to shredded shoes forever)
• S&S Quickee adjustable pushrods – zero cutting, zero guessing
• S&S Premium roller tappets – the quietest, longest-lasting lifters money can buy
• Billet black-anodized tappet cuffs – no more flex, no more distortion at .475" lift and 6500 rpm
• S&S 475C chain-drive cam – brutal mid-range, obscene low-end grunt, still idles like a gentleman (mostly)
• Gloss black pushrod tubes + every single gasket, bearing, and piece of hardware required

The 475C Grind – Pure Violence on Paper:

• .475" lift both ends
• Monster torque curve that hits like a freight train from 2,200–5,800 rpm
• Exhaust lift at TDC: .208" front / .170" rear – this thing SCAVENGES
• Proven 128–132 hp / 135–142 ft-lbs in 124–128" builds (depending on heads/exhaust/tune)

Fits every oil-cooled Milwaukee-Eight from 2018–2021:

• All 2018–2021 Softails (Fat Bob, Street Bob, Low Rider S, Heritage, Fat Boy, Breakout, FXDR, etc.)
• 2019–2021 Touring (Electra Glide Standard, Revival, etc.)
• 2018–2021 CVO Road Glide

Plug-and-play install. No case boring, no clearancing, no bullshit. Just pure, unfiltered American horsepower.

If you’re tired of getting walked by 107s with a Woods 22X or bolt-in 114s making more power than your “stage whatever,” this is your revenge.

NOT CARB APPROVED • CAN NOT SHIP TO CALIFORNIA • NOT FOR THE WEAK OF HEART

Trademark Disclaimer:
Harley-Davidson® is a registered trademark of Harley-Davidson Motor Company. High Desert Performance is not affiliated with or endorsed by Harley-Davidson Motor Company. All references are used solely for fitment and compatibility purposes.