This Big Twin CV Carburetor Support Bracket will fit 1985-1999 Harley-Davidson Evolution Big Twins with a stock CV (Continuous Velocity) carburetor. Don't let that carb just hang there! Fits 1985-1999 Evolution Big Twin . Powder-coated steel, Made in the USA. Carburetor support brackets should be used when not using a stock air cleaner and backing plate. Most stock setups, including the S&S Super E backing plate, have support for the carburetor integrated into the design. When running a custom air cleaner on a Harley-Davidson, the carburetor support bracket makes sure that the carb is securely mounted so the manifold can't rotate, making the carb sag downward. When running a custom air cleaner (such as a Lowbrow Louvered Air Cleaner or a Gasbox Dog Dish Air Cleaner) on a Harley-Davidson Evolution Big Twin or Sportsters engines or a Twin Cam engine, breather bolts are often needed to complete the installation.