Secondary Linkage - Adjustable - Stainless - Natural - Mechanical Secondary Holley 4150 / 4150 HP Carburetors - Kit

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Throttle Linkages, Secondary, Steel, Natural, Model 4500, 4500 HP, 4150, 4150 HP, Kit

Holley Pro Series secondary linkage kits will provide a bulletproof method of adjusting secondaries on all double pumper, HP, and Ultra HP Holley carburetors. You can choose between a 1:1 ratio and progressive secondary linkage operation. Their unique design provides infinite adjustment of the carburetor's secondary throttle blades, which makes for easier tuning decisions.