Custom billet barrel throttle bodies - Elmer Racing - YouTube
Barrel, butterfly or slide? - High Power Media
Speed Physics - These Irmler Racing Felgen throttle bodies with two barrels, one on top of the other, is just like those on Toyota's RVX #f1 #formula1 engines. They are made for
Barrel Throttle Valves: What are the Benefits/Drawbacks? : r/F1Technical