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OPGI Price: $9.99
Part Type: (P) High Performance, designed to improve performance
Sold As: SET
Made for square-bore Performer carbs, and comes with five pair of step-up springs. Includes one pair of 3" HG (blue), 4" HG (yellow), 5" HG (orange), 7" HG (pink) and 8" HG (plain). Change your fuel curve and the rate of fuel enrichment.