S&S Cycle 551G Gear Drive Camshaft Kit - Harley Dyna & Big Twin
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.
Elevate the performance of your Harley-Davidson Dyna or Big Twin with the S&S Cycle 551G Gear Drive Camshaft Kit. This comprehensive kit targets usable power, boosting low-end and midrange torque right off idle. The gear drive design is a significant upgrade, eliminating timing chain lash and tensioner wear for more precise valve timing and enhanced durability.
Why riders pick this
- Eliminates timing chain lash and tensioner wear
- Boosts low-end and midrange torque
- Complete kit for straightforward installation
- Works with stock valve springs
Designed for riders who demand reliable performance and a robust power curve, the S&S Cycle 551G camshaft kit is engineered to deliver. It focuses on the power band most riders use daily, providing a strong, responsive feel from the moment you twist the throttle. This cam is an excellent choice for stock or mildly modified touring bikes, enhancing your riding experience with improved acceleration and roll-on power.
Precision and Performance Combined
- Gear drive design eliminates timing chain lash and tensioner shoe wear
- Boosts low-end and midrange torque from idle to 4,000 rpm
- Complete kit includes camshafts with inner gears and outer cam drive gear
- Compatible with stock valve springs for simpler installation
Engineered for Lasting Power
Beyond the immediate performance gains, the S&S 551G Gear Drive Camshaft Kit offers long-term benefits by removing the wear points associated with chain-driven cams. This means more consistent performance and reduced maintenance over time. It's a smart investment for any rider looking to uncork their Dyna or Big Twin and enjoy a more engaging ride.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 106-4868
- Lift: .551 inch
- Category: Engine Components / Camshafts
- Weight: 5.9 lb
Common questions
What's included in the kit?
The kit includes camshafts with inner gears, an outer cam drive gear, and complete camshaft installation hardware.
Will these work with my stock valve springs?
Yes, these cams are compatible with stock valve springs, so you do not need to upgrade them.
Is this cam suitable for a stock engine?
Yes, this cam is ideal for stock or mildly modified engines, specifically those with 96–106 CID displacement and a 9:1 to 10:1 compression ratio. Always confirm fitment with your specific year and model using our Shop by Bike tool before ordering.
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 | T14-663325 |
| WEIGHT | 5.9 lb |
