Holley carbs have powered more racers than all others combined and they've just changed the game again. Holley is proud to introduce the all new Ultra HP 2 Barrel. Holley 2 barrels have been a mainstay in oval track racing for decades, but racers always want more. They want more tuning ability, more durability, more weight savings and more features, so Holley listened and designed the all new Ultra HP 2bbl. It delivers the proven results of the Ultra HP 4bbl but now in a 500 CFM 2bbl. It’s all aluminum so it provides nearly 50% weight savings. It has no choke tower and an all new air entry area for smoother air flow, yet it retains the critical venturii and throttle bore dimensions for rule racing. It has large capacity HP fuel bowls, wedged float, dedicated race-only throttle lever, billet metering blocks & base plates, plus much more. The new Holley Ultra HP 2bbl carbs are available in two finishes – a vibratory polished with black billet (part number 0-4412BK) and a Hard Core™ Gray hard coat anodized with black billet (part number 0-4412HB). They are already approved for use in the NASCAR Mid-West/West Coast Late Model Divisions and Holley expects more sanctioning bodies to approve them soon.