Holley has been at the forefront of powering racers, and now we're revolutionizing the game with the all-new Ultra XP 2 Barrel. While Holley 2 barrels have been a staple in oval track racing for decades, racers always crave more. More tuning ability, more durability, more weight savings, and more features. Holley listened to these demands and crafted the Ultra XP 2bbl, delivering the proven results of the Ultra XP 4bbl in a 500 CFM 2bbl that's also E85 Fuel Compatible. Constructed entirely from aluminum, it provides nearly 50% weight savings over its zinc counterpart.
Key Features:
- E85 Fuel Compatible
- All aluminum construction - almost 50% lighter than the zinc version
- Black billet aluminum metering block and base plate
- No choke tower for unobstructed airflow
- Outwardly moved air bleeds for a smoother transition of airflow
- Air cleaner flange centered over venturi for enhanced airflow and performance. Includes a 5/16-18 bent air cleaner stud
- 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
- Maintains the same 1-3/8” venturi & 1-11/16” Throttle Bore size and Throttle Plate/Throttle Shaft size as the original 0-4412
- Large capacity XP fuel bowl with wedged float and dedicated race-only throttle lever
- Billet metering block and base plate, and more
- Available in a Black Billet Finish
Additional Features:
- Fuel bowl with 20% more fuel capacity, equipped with internal baffling to control slosh
- Clear sight windows on both sides of the bowl for easy and safe fuel level adjustments
- Fuel trough designed into the floor of the bowl to direct fuel flow to the jets and aid in keeping jets covered by fuel
- Built-in drain plug for easy access to empty the bowl's contents
- Throttle shaft rides in oil-impregnated sintered bronze bushings for smooth throttle actuation
- Capped throttle shaft to prevent entry of debris and contaminants
- 50cc pump with metal lever and an anti-siphon valve in the main body to reduce pump pull over
- -8 (O-ring) inlet threads offering various plumbing options, with an extended -8 O-ring to -8AN male adapter and -8 plug included. Can be plumbed from either side
- Dedicated race-only throttle lever with unnecessary street attachment points and tangs removed
- Knurled (hand adjustable) curb idle screw for easy idle adjustment without tools
- Set screw for wide-open throttle stop adjustment
- Wedge float for fuel control during cornering
- 100% wet-flow tested by Holley technicians to ensure it arrives ready to run!
- Local Pickup Available:
- No
- Local Delivery Available:
- No
- Additional Handling:
- No
