✓ VERIFIED
Aug 28, 2023
Everything you expect from S&S
Have installed this kit on multiple bikes. S&S knows what they’re doing.
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S&S CYCLE
SKU: T14-1020320
S&S Cycle Power Pack Big Bore Cylinder & Cam Kit - Harley Touring, Softail & Dyna
$3,294.95
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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.
The S&S Cycle Power Pack is a comprehensive engine upgrade kit designed to significantly increase the displacement and horsepower of your Harley-Davidson. This package combines big bore cylinders, pistons, a performance cam, cam plate, and an upgraded oil pump. It's engineered to deliver a substantial performance boost without requiring a full engine rebuild.
Why riders pick this
- Increase displacement and horsepower
- Includes big bore cylinders and pistons
- Matched high-performance cam and cam plate
- Upgraded oil pump and support components
- Complete cam chest kit for a comprehensive upgrade
When you're chasing more grunt from your V-twin, an S&S Cycle Power Pack delivers. This isn't just a cam swap; it's a complete top-end and cam chest overhaul that uncorks serious potential. By increasing displacement and optimizing critical engine components, this kit transforms your Harley into a true powerhouse, ready for the open road or the drag strip.
Unlock Next-Level Performance
- Includes 4.32-inch big bore cylinders for increased displacement
- Features a matched high-performance cam and cam plate
- Comes with an upgraded oil pump and essential support components
- A complete cam chest kit for a thorough upgrade
Engineered for Serious Riders
Installing an S&S Power Pack is a commitment to performance. While it avoids a full engine rebuild, it does involve significant engine disassembly and precision work. This kit is ideal for riders who demand maximum output and are looking for a proven, integrated solution to elevate their Harley's capabilities. Pair it with a proper dyno tune and a performance exhaust for the ultimate setup.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 310-1226D
- Category: Engine Components / Piston Sets - Powersports
- Weight: 44.19 lb
Common questions
What components are included in this S&S Power Pack?
The Power Pack includes 4.32-inch big bore cylinders, pistons, a matched performance cam, cam plate, oil pump, and all necessary hardware for installation in the cam chest.
Does this kit require a complete engine rebuild?
While it doesn't require a full engine rebuild, installation involves significant engine disassembly and machine work. We recommend having a qualified Harley mechanic assess your specific bike before ordering.
Will I need to retune my motorcycle after installing this kit?
Yes, installing a performance kit of this magnitude will absolutely require a dyno tune to optimize fuel delivery and ignition timing for the new engine characteristics.
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 | Piston Sets - Powersports |
| SKU | T14-1020320 |
| WEIGHT | 44.19 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
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✓ VERIFIED
Apr 13, 2022
100 kit is sick! 10/5/1 compression is perfect for the 585 cams. Not going to burn the tires unless you bounce it, but at 2.7 K it pulls like a freight train. Super fun! Thanks S&S!
✓ VERIFIED
Mar 8, 2020
5 Stars
✓ VERIFIED
Jun 6, 2021
I didn't get it yet,can't wait too get it in my bike, than ill leave a review