✓ 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: T14-1020361
S&S Cycle 4.32-inch Big Bore Power Pack - Carb/EFI Harley V-Twin
$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.
S&S Cycle Power Packs bundle 4.32-inch big-bore cylinders, a matched camshaft, cam plate, and oil pump for both carbureted and EFI Harley engines. This complete bolt-together kit is designed to add reliable horsepower without requiring individual component sourcing. It provides a comprehensive solution for riders seeking a significant performance upgrade.
Why riders pick this
- Gain significant displacement with 4.32-inch big-bore cylinders
- Boost power with a matched S&S camshaft and cam plate
- Ensure reliable lubrication with an included S&S oil pump
- Complete cam chest components for a comprehensive upgrade
- Compatible with both carburetor and EFI Harley engines
When you're ready to uncork serious power from your Harley-Davidson, the S&S Cycle Power Pack delivers a proven path to increased performance. This kit is meticulously assembled to ensure that all critical engine components work in harmony, providing a robust foundation for increased displacement and significant horsepower. Whether your V-twin is carbureted or fuel-injected, this Power Pack is engineered to deliver.
Engineered for Broad Compatibility and Performance
- Features 4.32-inch big-bore cylinders for a substantial increase in engine displacement
- Includes a matched S&S camshaft and cam plate for optimized power delivery
- S&S oil pump included to ensure consistent lubrication under all conditions
- Complete cam chest components provide a comprehensive and integrated upgrade
- Compatible with both high-flow carburetor and EFI systems for versatility
Maximizing Your V-Twin's Potential
Installing an S&S Cycle Power Pack is a major performance upgrade that will transform your Harley's power delivery. Due to the nature of this modification, professional installation by a qualified Harley-Davidson technician is strongly recommended. After installation, a custom dyno tune will be essential to properly calibrate your engine's fuel and ignition systems, ensuring maximum output and long-term reliability for your specific setup.
Specifications
- Brand: S&S Cycle
- Manufacturer Part #: 310-1105D
- Category: Engine Components / Piston Sets - Powersports
- Weight: 44.19 lb
Common questions
Do I need to machine my cases for this kit?
Most S&S Power Packs drop into stock Harley cases, but machine work may be required depending on your engine year and condition. We recommend having a builder inspect your cases before ordering.
Is a new carburetor or fuel injection tuner required?
Yes, installing big-bore cylinders and a performance cam will require fuel and ignition recalibration. A new carburetor or a professional dyno tune with an aftermarket EFI tuner is essential.
Will this Power Pack fit my specific Harley-Davidson model?
S&S Cycle Power Packs are designed for specific Harley-Davidson engine platforms. Please use our Shop by Bike tool or consult S&S Cycle documentation to confirm exact year and engine size compatibility 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 | Piston Sets - Powersports |
| SKU | T14-1020361 |
| 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