High Velocity Heads SS4500-2AL Super Sucker 2" Aluminum Carburetor Spacer 4500 Flange

High Velocity Heads Super Sucker Carburetor Spacers deliver the combined midrange and top-end performance benefits of both 4-hole and open-style carburetor spacers in a single innovative design. Originally engineered for Winston Cup racing engines and later banned due to the significant performance advantage they provided, these spacers increase air velocity as it transitions from the carburetor base to the intake manifold, resulting in measurable horsepower gains. The efficiency improvement is so substantial that jetting adjustments may be necessary to maintain proper air-fuel ratios.

This aluminum version features a 2-inch height with 4500-series flanges on both the carburetor base and intake plenum sides. CNC-machined from aluminum for durability and heat resistance, it's ideal for circle track racing, street performance, and strip applications. The precision-engineered internal design smoothes the airflow transition, optimizing velocity and distribution to the intake valves.

Key Features:

• CNC-machined aluminum construction for strength and longevity
• 2-inch spacer height for optimal velocity increase
• 4500-series carburetor base and intake plenum flanges
• Smooths airflow transition from carburetor to intake manifold
• Increases midrange and high-range horsepower
• Can reduce elapsed times by up to 1/10th of a second in drag racing
• Can improve lap times by as much as 2/10th of a second on road courses
• Used by professional engine builders across multiple racing disciplines
• Made in USA

Proven by top engine builders and racers, the Super Sucker design represents decades of high-performance carburetor spacer development and delivers consistent, measurable results on the track.