An advanced design that allows faster and smoother airflow through the venturi A strong vacuum at the needle jet nozzle results in more efficient, quicker fuel draw for instant throttle response Carb body accepts the power-jet and accelerator pump kits Uses standard VM-type mounting flanges and most of the same tuning components NOTE: 32, 34 and 36mm carbs are equipped with 3.3 needle valve for gravity feed applications. The 38mm carbs are equipped with a 1.5 needle valve. For applications with a fuel pump, order PART #7864600115, SUG. RETAIL $16.50.