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 the power in your big-twin Dyna with the S&S Cycle Easy Start camshaft kit, featuring a .640 inch lift. This kit is specifically designed for engines with 95+ cubic inches and compression ratios between 10.5:1 and 11.5:1, delivering optimal power in the 3,000–6,000 rpm range.
Why riders pick this
- Features .640 inch lift for significant power gains
- Includes inner timing gears and outer cam drive gear
- Easy Start design compatible with stock starters
- Eliminates timing chain lash for accurate valve timing
- No tensioner shoes to wear or replace
- Optimized for 95+ CID engines with 10.5:1 to 11.5:1 CR
The S&S Cycle Easy Start camshaft kit is engineered for serious performance in 2006–2016 Harley-Davidson big-twin Dyna models. This comprehensive kit includes inner timing gears and an outer cam drive gear, eliminating timing chain lash for superior valve timing accuracy. The Easy Start design is a game-changer, allowing your stock starter to effortlessly crank any engine, even with higher compression. Say goodbye to worn tensioner shoes, as this gear-drive system removes the need for them entirely, providing a more reliable and maintenance-free valvetrain.
Advanced Valvetrain Performance
- Cam kit includes inner timing gears and outer cam drive gear
- Eliminates timing chain lash for precise valve timing
- Easy Start design works with your stock starter on any engine
- No tensioner shoes to wear out or replace for enhanced reliability
- Direct bolt-in fitment for 2006–2016 big-twin Dyna models
Ready for Serious Power
This .640 inch lift cam is built to deliver a powerful punch, ideal for riders who have already upgraded their engine displacement. Its design focuses on creating a strong, broad power band, making it an excellent choice for performance-oriented Dyna builds. For best results, ensure your engine's compression ratio is within the specified range, and consider a dyno tune to fully optimize your setup and unlock the cam's maximum potential.
Specifications
-
Brand: S&S Cycle
-
Manufacturer Part #: 106-4850
-
Lift: .640 inch
-
Category: Engine Components / Camshafts
-
Weight: 1 lb
Common questions
Can I use the stock starter motor with this cam?
Yes, S&S Easy Start camshafts are engineered to work with the stock starter on any engine, eliminating the need for an upgraded starter.
Will this cam fit my 2017 or newer Dyna?
This part is specifically designed for 2006–2016 Harley-Davidson big-twin Dyna models. It is not compatible with 2017+ models.
What engine modifications are required for this cam?
This cam requires an engine displacement of 95 cubic inches or greater, with compression ratios between 10.5:1 and 11.5:1 for optimal performance.
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.
