S&S Cycle 550G Gear Drive Camshaft Kit for 114+ CI - Harley Milwaukee-Eight Touring
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.
Eliminate cam chain noise and improve valvetrain stability on your Harley-Davidson Milwaukee-Eight 114 cubic inch or larger Touring model with the S&S Cycle 550G gear drive camshaft kit. This system replaces the factory cam chain setup with a robust gear drive, ensuring precise cam timing and enhanced reliability. Experience a quieter, more efficient engine with this performance upgrade.
Why riders pick this
- Gear drive eliminates cam chain and tensioner noise
- 550G profile optimized for 114+ CI Milwaukee-Eight
- Improves valvetrain stability and timing accuracy
- Includes bearings, O-rings, and mounting hardware
- Made in USA for quality and precision
The S&S Cycle 550G gear drive camshaft kit is engineered for Harley-Davidson Touring models equipped with 114 cubic inch and larger Milwaukee-Eight engines. By transitioning from a chain drive to a gear drive, this kit eliminates potential issues associated with cam chain tensioners and delivers a more direct, reliable connection between the crankshaft and camshaft. The 550G cam profile is specifically optimized to maximize the performance of larger displacement M8 engines.
Enhanced Valvetrain Stability and Power
- Gear drive system replaces factory cam chain for improved reliability
- 550G cam profile optimized for 114+ cubic inch Milwaukee-Eight engines
- Reduces valvetrain noise and minimizes timing fluctuations
- Includes all necessary bearings, O-rings, and mounting hardware
- Made in the USA for superior quality and fitment
Important Installation Considerations
To complete the installation of this S&S 550G gear drive camshaft kit, you will need to purchase adjustable pushrods and heavy-duty valve springs separately, as they are not included. These additional components are crucial for proper valvetrain geometry and to handle the increased lift and duration of the 550G cam. A professional installation and a custom dyno tune are strongly recommended to ensure optimal performance, prevent potential engine damage, and fully realize the benefits of this significant upgrade.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 330-0647
- Weight: 4.18 lb
- Category: Engine Components / Camshafts
Common questions
What additional parts do I need to install this S&S 550G gear drive cam kit?
You will need to purchase adjustable pushrods and heavy-duty valve springs separately. These components are essential for a complete and proper installation.
Will this gear drive cam fit my 107 cubic inch Milwaukee-Eight engine?
No, this S&S 550G gear drive camshaft kit is specifically designed for Harley-Davidson Milwaukee-Eight engines with 114 cubic inches or larger displacement.
What are the benefits of a gear drive cam over a chain drive?
A gear drive system eliminates the cam chain and tensioner, reducing potential points of failure, minimizing valvetrain noise, and providing more precise and stable cam timing for consistent 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.
| BRAND | S&S Cycle |
| TYPE | Camshafts |
| SKU | T14-663368 |
| WEIGHT | 4.18 lb |
