Pro-Series Adjustable Secondary Linkage Kit for all Holley Double Pumper, HP, and Ultra XP carburetors. It allows user to pick between 1:1 or progressive secondary ratio. Compact design won't interfere with throttle linkage.
AED 41501 Pro Series Carburetor Rebuild Kit Holley 650 750 850 Double Pumper-NEW
AED 41601 Holley 600-750 Vacuum Secondary Pro Series Carburetor Rebuild Kit 3310
ARP Cylinder Head Studs Pro Series 12-Pt Head BBC Brodix Canfield Holley Heads
HOLLEY #6425 650 2 BARREL PRO SERIES CARBURETOR REBUILD KIT
AED 41601 Holley 600-750 Vaccuum Secondary Pro Series Carburetor Rebuild Kit
Chain Fits Locker Pro Series Chain Fits Locker Pro Series 2204 CHN-2204
