S&S Cycle 475 Cam Chest Kit For Harley Twin Cooled Milwaukee-Eight 2017-2026
S&S 475 Kit: Dominating Power for the Twin Cooled Milwaukee-Eight
The S&S Cycle 475 Cam Chest Kit for 2017-2026 Twin Cooled Harley models represents the 2026 pinnacle of Milwaukee-Eight (M8) valvetrain engineering. While the M8 platform is highly efficient, the factory oil pump and cam plate are often considered the weak points when moving toward performance tuning. S&S addresses these vulnerabilities by providing a precision-engineered system that manages both the increased mechanical loads and the higher thermal demands of a high-lift camshaft. The 475 cam itself is a masterpiece of lobe design, providing a broad, usable powerband that kicks in exactly where the 2026 touring rider needs it for aggressive passing and canyon carving. For those seeking secure, industrial-strength utility and a world-class exhaust note, the S&S 475 kit is the unmatched professional choice.
Billet Blue Engineering and Advanced Thermal Stability
What sets the S&S 475 Cam Chest Kit apart in the 2026 marketplace is the inclusion of the S&S High-Volume Oil Pump and Cam Plate. Specifically designed for “Twin Cooled” (liquid-cooled head) engines, this system ensures that oil flow remains constant across the entire RPM range. The cam plate is CNC-machined from 6061 billet aluminum and finished in a signature blue anodizing, offering far greater structural integrity than factory cast components. This rigidity prevents the plate from flexing under the pressure of high-performance valve springs. Furthermore, the oil pump features independent scavenge sections for the flywheels and the cam chest, virtually eliminating the risk of “sumping”—a vital consideration for high-output M8 engines during the 2026 riding season. Every kit is hand-inspected and dyno-verified to guarantee that your Stage 2 build delivers the high-horsepower presence S&S is famous for.
S&S 475 Cam Chest Kit Technical Specifications
- Fitment: 2017-2026 Harley-Davidson Twin Cooled M8 (Touring & CVO Models).
- Camshaft Profile: S&S 475 (Optimized for 100+ HP performance).
- Oiling System: Blue-anodized billet aluminum cam plate and high-volume pump.
- Lifters: Includes S&S Precision Hydraulic Lifters and billet Lifter Cuffs.
- Pushrods: S&S Quickie Adjustable Pushrods for no-rocker-box installation.
- Bearings: Includes heavy-duty inner cam bearing for 2026 reliability.
- Origin: 100% Precision Ground and Hand-Assembled in the USA.
Expert Installation & Performance Advice
As specialists in Milwaukee-Eight engine management, we recommend the 475 kit for riders who want that iconic “Harley loping” idle and high-RPM power. Pro Tip: To truly maximize your 2026 horsepower gains, pair this kit with a high-flow 2-into-1 exhaust like the Bassani Road Rage. Installation Note: When installing the S&S oil pump, it is critical to use the provided O-rings and verify the oil pump alignment; improper alignment can lead to pressure loss. Maintenance Note: Use a high-quality 20W-50 synthetic oil to ensure the hydraulic lifters and cam lobes remain protected during the 2026 summer heat. Safety Note: A high-performance cam significantly changes the airflow dynamics; a Stage 2 ECU recalibration using a Dynojet Power Vision or Fuelpak FP4 is mandatory to prevent lean conditions and ensure engine longevity.
The Professional Standard for High-Performance M8 Baggers
Choosing the S&S Cycle 475 Cam Chest Kit means investing in unmatched mechanical stability and acoustic authority. It offers a unique combination of modern billet technology and a race-bred cam profile that honors the performance legacy of the Harley-Davidson brand. For the rider who wants a high-output 2026 presence and a flawless engineering finish, the S&S 475 Kit is the unmatched leader. Bolt it in, feel the power, and ride the distance.
Features:
- Precision Machined from Billet Aluminum
- Blue Anodized Finish cam plate and oil pump
- Passage Plugs Removable for servicing cam plate and oil pump
- 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
- Adjustable Pressure Relief Valve is adjustable with unit installed in engine
- Quickee Pushrods
- S&S Premium Tappets
- Improve tappet stability in high lift and high rpm situations
- 475 is a bolt in 100hp cam
- Includes all gaskets, bearings, and hardware required for installation
| Product Style | AmericanV-twin Item # | Catalog Number | Store Sku | MFR. Product # | Availability |
|---|---|---|---|---|---|
| Chrome Pushrod Tubes / Chain Drive | 85615 | 85615 | 22875 | 310-1004B | In Stock: Ships within 24 hours |
| Black Pushrod Tubes / Chain Drive | 85616 | 85616 | 22874 | 310-1012B | In Stock: Ships within 24 hours |
| Chrome Pushrod Tubes / Gear Drive | 36989 | 305-0987 | 310-1006A | In Stock: Ships within 24 hours | |
| Black Pushrod Tubes / Gear Drive | 85617 | 305-0995 | 310-1014A | In Stock: Ships within 24 hours |
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