S&S Cycle Valve Spring Kit High-Lift Conical - Harley Milwaukee-Eight (2017+)
About S&S Cycle
S&S Cycle has built American V-twin performance parts in Viola, Wisconsin since 1958 — flywheels, carburetors, cams, cylinder heads and complete crate engines. When a Harley owner talks about a 124, a 128 or a 131 build, they are usually talking about S&S. Few names carry more weight with engine builders in this space.
Maximize your Milwaukee-Eight engine's potential with the S&S Cycle high-performance valve spring kit. Engineered to support aggressive, high-lift camshafts up to .605 inches, this kit provides the necessary valvetrain stability for serious power. Made in the USA, it's a complete package designed for durability and peak performance.
Why riders pick this
- High-performance conical single-wire spring design
- Supports camshafts with up to .605 inches of lift
- Complete kit: springs, top collars, keepers, bottom collar/seals
- Enhances valvetrain stability and control
- Made in the USA for superior quality
When you're pushing the limits of your Milwaukee-Eight with a performance camshaft, robust valve springs are non-negotiable. This S&S Cycle valve spring kit is specifically designed for 2017 and newer M8 engines, featuring a high-performance conical single-wire spring design that maintains precise valve control even at elevated RPMs and with higher lifts. This ensures your valves follow the cam profile accurately, preventing valve float and unlocking the full power potential of your engine.
Complete Valvetrain Stability
- High-performance conical single-wire spring design for superior control
- Supports high-lift camshafts up to .605 inches
- Complete kit includes springs, top collars, keepers, and bottom collar/seals
- Manufactured in the USA for quality and reliability
Essential for High-Lift Cam Upgrades
This S&S Cycle valve spring kit is an essential upgrade for any Milwaukee-Eight rider installing a performance cam with increased lift. It provides the crucial valvetrain stability needed to handle more aggressive cam profiles, ensuring consistent performance and engine longevity. While designed for a direct fit, proper installation requires specialized tools and knowledge of engine assembly. We highly recommend professional installation to ensure correct spring pressures and component seating, safeguarding your M8 engine.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 900-0958
- Category: Engine Components / Valve Springs, Retainers
- Weight: 1.2 lb
Common questions
What is the maximum cam lift these valve springs support?
These S&S Cycle valve springs are engineered to support camshafts with up to .605 inches of valve lift. For cams with higher lift, a different spring set may be required.
What components are included in this valve spring kit?
The kit is comprehensive and includes the valve springs, top collars, keepers, and the bottom collar with seals, providing everything needed for a complete valve spring replacement.
Are these valve springs made in the USA?
Yes, these S&S Cycle valve springs are proudly manufactured in the USA, ensuring high quality and consistent performance for your Milwaukee-Eight engine.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | S&S Cycle |
| TYPE | Valve Springs, Retainers |
| SKU | T14-661999 |
| WEIGHT | 1.2 lb |
