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 T124 High-Compression Long Block engine is engineered for riders who demand maximum power and displacement from their 2007-2016 Harley-Davidson Touring models. This long block delivers a substantial increase in cubic inches, providing a formidable foundation for a high-performance build. It's designed to integrate with your existing EFI tuner and throttle body, offering a straightforward path to serious power.
For ultimate V-twin performance, the S&S Cycle T124 High-Compression Long Block engine is a prime choice for your 2007-2016 Harley-Davidson Touring. This engine comes without a fuel injection or ignition system, giving you the flexibility to either reuse your current setup or upgrade to a more advanced EFI tuner and throttle body. The T124's design ensures you get increased displacement without needing to modify your intake manifold, streamlining the installation process.
This S&S Cycle T124 long block is a direct fit for 2007-2016 Harley-Davidson Touring models (excluding Twin-Cooled variants, Tri-Glide, or three-wheel conversions). It's built to deliver a significant boost in performance, making your bagger a force to be reckoned with. A programmable EFI tuner is essential to properly calibrate your engine management system for the increased displacement and high-compression characteristics of this motor, ensuring optimal performance and longevity.
Does this engine work with a stock ECU?
No, a stock non-programmable ECU is not calibrated for 124 cubic inches. You will need a programmable EFI tuner designed for high-performance applications to properly manage this engine.
Is this engine compatible with Twin-Cooled Touring models?
No, this T124 high-compression long block is not compatible with Twin-Cooled Harley-Davidson Touring models, Tri-Glide, or three-wheel conversions due to specific lugging characteristics.
Is an external oil line kit included?
No, an external oil line kit is required and must be purchased separately. This allows you to choose the appropriate components for your build.
| BRAND | S&S Cycle |
| TYPE | Engines |
| SKU | T14-661549 |
| WEIGHT | 160.0 lb |
I have the 124 in a 2002 Harley Davidson Electra glide classic, the best thing I did to my bike was the have this motor installed, the power is A-1 , you can't go wrong with this, I'm very happy with this product by S&S😂💪🏿😎.
