Holley carbs have powered more racers than all others combined and We've just changed the game again. Holley is proud to introduce the all new Ultra XP 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 XP 2bbl.
Delivering the proven results of the Ultra XP 4bbl but now in a 500 CFM 2bbl and E85 Fuel Compatible. 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 venturi and throttle bore dimensions for rule racing. It has large capacity XP fuel bowl, wedged float, dedicated race-only throttle lever, billet metering block & base plate, plus much more. The new Ultra XP 2bbl carbs for E85 are available in Black Billet Finish
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!
Carburetor
All aluminum construction - for nearly 50% weight savings over zinc version Black billet aluminum metering block and base plate No choke tower for unobstructed airflow Air bleeds moved outward to allow a smoother transition of airflow Air cleaner flange centered over venturi for improved airflow and performance. 5/16-18 bent air cleaner stud included Down-leg boosters for improved fuel signal Contoured hex head squirter screw for streamlined airflow Internal pump passage on metering block equipped with tunable bleed off Same 1-3/8" venturi & 1-11/16" Throttle Bore size and Throttle Plate/Throttle Shaft size of original 0-4412 Fuel bowl provides 20% more fuel capacity while controlling slosh with internal baffling Clear sight windows on both sides of bowl for easy & safe fuel level adjustments Fuel trough designed into floor of bowl to route fuel flow directly to the jets and assists in keeping jets covered by fuel Built in drain plug provides easy access to empty contents of bowl Throttle shaft rides in oil impregnated sintered bronze bushings for smooth throttle actuation Throttle shaft capped to prevent entry of debris & contaminates 50cc pump with metal lever. Anti-siphon valve in main body to reduce pump pull over -8 (O-ring) inlet threads offer a large variety of plumbing options (come with an extended -8 O-ring to -8AN male adapter and -8 plug). Can be plumbed from either side Dedicated race-only throttle lever with all unnecessary street attachment points & tangs removed Knurled (hand adjustable) curb idle screw allows for easy idle adjustment without the use of tools Set screw for wide open throttle stop adjustment Wedge float provides fuel control while cornering 100% wet-flow tested by Holley technicians to assure it arrives ready to run!Product Description:
Carburetor Ultra XP 2-Barrel 500 CFM Holley Flange No Choke Single Inlet Black Anodized E85 Sold IndividuallyFor over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel, and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.
