For use with the FAST™ LSXR™ 102mm Intake Manifold. Includes GM LS Style fuel rails, spacers, and bolts for LS1 height injectors using the included spacers

Compatible with SKU's FAST-146102B and FAST-146302B

To use LS1 height injectors - Use the included FAST™ fuel rail spacers
To use LS2 height injectors - Bolt fuel rail directly to intake no spacers required
To use LS3 height injectors - Use SKU 551287-LS-058 (Sold Seperately)
To use Truck height injectors - Use SKU 551371 (Sold Separately) AND Included FAST™ fuel rail spacers