FAST Black Throttle Body LSX 102MM w/ TPS & IAC

If you're looking to get the most out of your GM Gen III or Gen IV engine, especially when paired with an aftermarket intake manifold, this FAST 102mm Big Mouth Throttle Body is a solid choice. It's designed to bolt onto cable-driven throttle body setups and significantly increases airflow compared to stock, which is crucial for performance upgrades.

This throttle body features a 102mm opening, nearly 40% larger than what you'd find from the factory, making it ideal for use with FAST LSXR, LSXRT, and LSXHR intake manifolds, or any other manifold with a 102mm or larger inlet. FAST also beefed up the throttle blade thickness to prevent deflection, which is especially important if you're running boost. You'll notice improved throttle response thanks to a smoother offset blade pivot and a more robust linkage with a dual spring mechanism for precise control.

FAST put a lot of work into optimizing the airflow path, reducing turbulence even at part-throttle. Keep in mind this part is not CARB approved and cannot be shipped to California.