Quick Fuel "Brawler" 750 CFM Carburetor. Quick fuel carburetors are amongst the highest quality carburetors on the market. They are hand assembled and engine tested here in the USA. Carburetor has been tumble polished for a beautiful long lasting shine. The BR-67213 is a double pumper carburetor and features mechanical secondary and electric choke. Other standard features include dual billet metering blocks, billet throttle body, screw in air bleeds, high speed bleeds, idle feed restrictions, power valve channel restrictions, 4-corner idle, built-in sight glasses, tunable secondary opening rate and down leg boosters. The Brawler 750 carburetors have 1.375" venturies and 1-11/16" throttle bore.