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Holley Pro Series Secondary Linkage Kits

4.48 out of 5 stars 29 Customer Reviews

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.

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Holley Pro Series Secondary Linkage Kits 20-122

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

Part Number: HLY-20-122

4.48 out of 5 stars ( 29 )

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