Store › Throttle Linkage Duplicator Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 Throttle Linkage Duplicator $59.95 This tool assists in building and accurately duplicating throttle linkages to exact lengths, ranging from 1 1/2” to 18”. Quantity: Add To Cart Added! This tool assists in building and accurately duplicating throttle linkages to exact lengths, ranging from 1 1/2” to 18”.