S&S Cycle 99-06 BT T124LC Long Block Engine w/ 585 Cam - Wrinkle Black

S&S Cycle has been building performance motorcycle engines for decades, known for their robust construction and power. This T124LC Long Block engine is a prime example, offering a significant upgrade for your 1999-2006 Harley-Davidson Big Twin. It's designed to give you more displacement and a solid foundation for a custom build, fitting models like the Road King, Electra Glide, and Street Glide.

This isn't a complete engine; it's a long block, meaning it comes with the essential rotating assembly and cylinder heads, but leaves the fuel and ignition systems up to you. This flexibility allows you to reuse your existing performance carburetor or EFI setup, or choose new components that perfectly match your riding style. The 4-5/8" stroke and 4-1/8" bore result in 124 cubic inches of displacement with a 10.2:1 compression ratio. This lower compression compared to their high-performance versions makes it more forgiving with different fuel qualities and a better choice for heavier bikes or those looking for a more street-friendly power delivery. It also features S&S 585 gear drive Easy Start cams, an S&S TC3 cam plate and oil pump, all finished in a wrinkle black powder coat that matches stock components.

The cylinder heads are specially machined to accommodate the longer cylinders, ensuring that your stock-length manifold or throttle body will fit without issue. The breather setup is also designed to work with air cleaners meant for stock engines, simplifying the installation process. While this engine is a substantial upgrade, remember that stock, non-programmable engine management systems are not recommended due to the increased engine size. This engine is not compatible with HD Softail models and is not CARB approved, so it cannot be shipped to California. It comes with a two-year warranty from S&S Cycle.