Pro-Series Adjustable Secondary Linkage Kit for all Holley Double Pumper, HP, and Ultra XP carburetors.

Featuring Stainless Steel construction and a lightweight yet rugged design, it provides a bulletproof method of adjusting secondaries on all Double Pumper, HP, and Ultra XP carburetors. It allows user to pick between 1:1 or progressive secondary ratio. Kit provides infinite adjustment of secondary throttle blades for maximum horsepower output.

Features:

• Includes all necessary hardware
• Compact design won't interfere with throttle linkage
• Perfect for circle track and drag racing
• Detailed instructions included
• Simple installation
• Tough Stainless Steel construction for longevity, durability and control
• Choose between a 1:1 and a progressive secondary ratio