✓ VERIFIED
May 24, 2022
Outstanding. Leaps and bounds more superior to any of the trash Harley vomits from the assembly line.
S&S CYCLE
SKU: T14-663320
S&S Cycle 551 Easy Start Cam Kit - Harley Dyna
$549.95
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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.
Unlock significant low-end and midrange torque on your 2007-2017 Harley-Davidson Dyna with the S&S Cycle 551 Easy Start Cam Kit. Designed as a bolt-in upgrade, these cams are optimized to deliver a noticeable performance improvement from idle up to 4,000 rpm, using many of your existing engine components. Experience a more responsive and powerful ride.
Why riders pick this
- Boosts low-end and midrange torque
- Easy Start Cams work with stock starter
- Compatible with stock valve springs
- Bolt-in design for easier installation
- Includes cams, gaskets, and cam bearings
The S&S Cycle 551 Easy Start Cam Kit is a popular choice for Dyna riders looking to enhance their bike's performance without a complete engine overhaul. Engineered for 96–106 CID engines with 9:1–10:1 compression, these cams are specifically designed to improve the powerband where you use it most – in everyday riding and aggressive street performance. The innovative Easy Start feature means your stock starter motor can handle the increased compression, simplifying the upgrade process.
Instant Torque and Easy Starting
- Optimized for significant low-end and midrange torque from idle to 4,000 rpm
- Easy Start design allows stock starter motors to effortlessly crank the engine
- Compatible with stock valve springs, reducing additional upgrade costs
- A complete kit including cams, gearcover gasket, and cam bearings
- Bolt-in installation, reusing many factory components for convenience
Performance for the Street
This 551 Easy Start Cam Kit is a fantastic upgrade for 2007-2017 Harley-Davidson Dyna models, particularly those with stock or mildly modified engines. It’s ideal for riders who want more grunt off the line and stronger pull through the gears without sacrificing rideability. While designed for easy installation, a proper dyno tune is always recommended after a cam swap to fully optimize your engine's performance and ensure everything is running at its peak.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 106-4947
- Category: Engine Components / Camshafts
- Weight: 3.8 lb
Common questions
Will this cam kit fit my Dyna with aftermarket heads or a big bore kit?
This cam is rated for 96–106 CID engines with 9:1–10:1 compression. If you have aftermarket heads or a big bore kit, you must verify your displacement and compression ratio to ensure compatibility. Higher compression or larger displacement engines may require a different cam.
Do I need to replace my valve springs with this cam kit?
No, a key benefit of the S&S Cycle 551 Easy Start Cam Kit is its design to work effectively with your stock valve springs, simplifying the installation and reducing additional costs.
Will I need a dyno tune after installing these cams?
Yes, anytime you perform a cam swap, a proper dyno tune is highly recommended. This will optimize your engine's fuel mapping and ignition timing to maximize the performance gains from the new cams and ensure reliable operation.
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 | Camshafts |
| SKU | T14-663320 |
| WEIGHT | 3.8 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.5
4 RATINGS
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✓ VERIFIED
Jan 16, 2025
Not all the parts fit
One of the packages has the wrong size wrist pin. This delayed my rebuild by about a week.
✓ VERIFIED
Feb 8, 2024
POWER!!
Just these pistons added to my 110 took me from 108hp to 120hp with some tuning! Great parts! Even after an engine failure, these pistons survived with no issues. Very happy with them.
✓ VERIFIED
Jan 6, 2020
Superb power! Luv it!
