You all know. Big engines require big air flow. Zipper’s Thundermax offers Throttle Body, Manifold and High Flow Air Cleaner assemblies for large displacement performance engines For example, for Harley-Davidson 2006 and up Thundermax provides a one-piece throttle body/manifold with oversize CNC-machined castings to replace the factory H-D® designs used on Delphi®-equippe models.
They are designed to accept the original factory electronic components for easy assembly. Available in 54 and 60mm; high flow design requires ThunderMax Air Filter Kit with spread bolt pattern. Manifold width available for most popular engine kits from 95” up to 124” with oversize (1.780” ID) intake port opening. Includes our billet intake flanges and seals. Thundermax Throttle Body. (Mention my Blog and get free ground freight in the lower 48 states within the USA when ordering together any ThunderMax Throttle Body, Manifold and Air Cleaner)