S&S Cycle 475 Cam Kit For Harley Milwaukee Eight 2017-2026
The Torque Master: S&S Cycle 475 Cam Kit for Harley Milwaukee-Eight (2017–2026)
The S&S Cycle 475 Cam Kit is arguably the most popular and effective bolt-in performance camshaft upgrade available for the modern Harley-Davidson Milwaukee-Eight (M8) engine (2017–2026). Engineered specifically for riders who want massive, usable power where they need it most—on the street and highway—the 475 cam is designed to deliver a dramatic increase in low and mid-range torque, transforming the M8’s character into an effortless, responsive powerhouse.
Precision Engineering for Low-End Muscle
The stock Milwaukee-Eight engine provides a smooth, but often restrained, power delivery. The S&S 475 Cam corrects this by significantly optimizing the valve timing, lift, and duration to increase cylinder pressure across the lower RPMs.
The Sweet Spot: 2,000 to 5,000 RPM
The 475 grind is expertly optimized to maximize the powerband in the 2,000 to 5,000 RPM range. This is the range where a majority of street and touring riders operate their bikes, making the cam exceptionally effective for:
Aggressive Launching: Instant thrust off the line.
Effortless Passing: Rapid acceleration without the need for excessive downshifting.
Touring Comfort: Easily handling steep grades and fully loaded bags/passengers.
The result is a feeling of seamless, accessible power that is both exhilarating and practical for daily riding.
True Bolt-In Design
One of the greatest benefits of the S&S 475 Cam Kit is its design as a true bolt-in Milwaukee-Eight cam. Its lift profile is carefully chosen to be fully compatible with the stock valve springs and tappets in all 2017–2026 M8 models. This eliminates the need for expensive and labor-intensive head work (like swapping valve springs), making the installation quicker, easier, and much more cost-effective.
Comprehensive Kit Contents and Durability
The S&S 475 Cam Kit is typically offered as a comprehensive package to ensure not just performance, but also durability and reliability.
A Focus on the Cam Chest
To ensure reliable performance, S&S strongly recommends addressing the entire cam chest when performing a cam swap. Their kits often include or are designed to be paired with:
Premium Tappets/Lifters: High-quality, durable tappets are crucial for handling the increased lift and aggressive ramps of the new cam profile.
High-Performance Pushrods: Adjustable pushrods (often included) allow for precise setting of tappet preload, which is vital for engine longevity and eliminating noisy valve train operation.
Inner Cam Bearings: New inner cam bearings are a mandatory replacement during any cam swap to ensure smooth, friction-free operation.
The use of high-quality components solidifies the reputation of the S&S 475 Cam Kit as a foundational component for the most reliable 2017-2026 Harley Performance Cam builds.
Maximizing the Upgrade
While the cam itself is bolt-in, unlocking its full potential and ensuring safe operation requires key supporting modifications:
Fuel Management & Tuning (MANDATORY): A proper EFI tuner (like the S&S tunable unit) and a professional dyno tune are absolutely essential. The increased airflow and efficiency of the new cam profile change the engine’s fueling requirements. Running the engine without a tune will result in lean conditions, overheating, and potential engine damage.
High-Flow Air Cleaner & Exhaust: The M8’s improved breathing must be fed and expelled efficiently. A performance air cleaner and a free-flowing exhaust system are required to realize the maximum M8 475 Camshaft Upgrade gains.
The S&S Cycle 475 Cam Kit is the industry standard for riders of M8 Touring and Softail models who seek a reliable, easy-to-install upgrade that delivers a dramatic, adrenaline-boosting increase in usable torque.
S&S 475 Cam Kit For Harley Milwaukee Eight
Features:
100 Hp Bolt-in Cam (when coupled with intake and exhaust)
Eliminates cam drive chain and tensioner
Gear drive cams provide improved valve timing accuracy
Kits include all required bearings, o-rings, and hardware
Highly recommended to use S&S Cycle Quickee Pushrod Kit 1219815
Made in the USA
475 Cam Info:
Front Intake open/close 6.2°/27.2°
Front Exhaust open/close 55.2°/28.5°
Rear Intake open/close 2.2°/31.2°
Rear Exhaust open/close 52.2°/20.2°
Front Intake duration 213.5°
Rear Intake duration 213.5°
Front Exhaust duration 263.9°
Rear Exhaust duration 252.5°
Intake Lift .475″
Exhaust Lift .475″
Front Intake Lobe Center Line 100.5°
Front Exhaust Lobe Center Line 103.5°
Rear Intake Lobe Center Line 104.5°
Rear Exhaust Lobe Center Line 106.0°
Front Intake Lift at TDC .107″
Front Exhaust Lift at TDC .208″
Rear Intake Lift at TDC .093″
Rear Exhaust Lift at TDC .170″
Front Overlap 34.7°
Rear Overlap 22.4°
Made in the USA
| Product Style | AmericanV-twin Item # | Catalog Number | Store Sku | MFR. Product # | Availability |
|---|---|---|---|---|---|
| Chain Drive Cam | 1254797 | 160-0193 | 296955 | 330-0641 | In Stock: Ships within 24 hours |
| Gear Drive Cam | 1254798 | 160-0191 | 330-0645 | In Stock: Ships within 24 hours |
This Product Fits
Harley Davidson
Electra Glide Standard FLHT 2019, 2020, 2021, 2022
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Electra Glide Ultra Limited CVO/SE FLHTKSE 2017, 2018, 2019, 2020, 2021
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Softail Slim FLSL 2018, 2019, 2020, 2021
Softail Sport Glide FLSB 2018, 2019, 2020, 2021
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Softail Street Bob 114 FXBBS 2021, 2022, 2023, 2024
Softail Street Bob FXBB 2018, 2019, 2020, 2025, 2026
Street Glide CVO/SE FLHXSE 2017-2022
Street Glide FLHX/I 2017-2026
Street Glide Special FLHXS 2017-2023
Street Glide ST FLHXST 2022, 2023
Street Glide Ultra FLHXU 2025
Tri Glide CVO/SE FLHTCUTGSE 2020, 2021, 2022
Tri Glide Ultra Classic FLHTCUTG 2017-2025
