Product Description
Choose the S&S CYCLE KIT HSU 124″00-06TCB BLK from Knobtown Cycle, Kansas City’s go-to shop for motorcycle parts.
Key Features
- For balanced Twin Cam models
- Converts a stock engine to 124″ using the stock crankcases
- Includes S&S Super Stock® 91 cc cylinder heads, 4.125″ big bore cylinders, forged big bore flattop pistons, S&S 4.625″ stroke flywheel assembly, S&S 640 gear drive Easy Start cams, S&S premium tappets, S&S adjustable pushrods, roller rocker arms, and all hardware, gaskets and instructions
- Made in the USA
- EFI system must be recalibrated.
- Fuel or ignition system not included.
- All clearances and assembly specifications will need to be checked.
- Although the engine is 0.960″ taller than stock, there are no frame clearance problems, and a stock EFI throttle body will fit because the manifold mounting surfaces of the heads have been specially machined to fit a stock length manifold.
Product Specifications
- Part Number: 09031254
- Brand: S&S CYCLE
- Weight: 111.00 lbs
Professional Installation Available
Buy online or visit our Kansas City showroom. Contact us for installation service options! Free Ship to Store!
Part Locations
| Location |
Available |
| Wisconsin (WI) |
6 |
| New York (NY) |
0 |
| Texas (TX) |
0 |
| Nevada (NV) |
1 |
| North Carolina (NC) |
0 |
| National Total |
7 |
Stock levels last updated: January 30, 2026 8:09 PM
Professional Installation Available
Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.
Thank you for Shopping at Knobtown Cycle!
When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.
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