A precisely tuned, quality-built carburettor should be able to handle the rigours of daily driving while delivering consistent, reliable street performance from day to day. Several characteristics make the carburettors outstanding street performers. The first one is that they use metering rods to transition between circuits. They are unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburettor removal or fuel draining. Secondly, they have the unique ability to "hold a tune", so once they're tuned, they stay tuned. What this means to you is that compared to other carburettors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminium body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The outside is ball-burnished for a bright finish. The simple tub-type bowls and rear-pivot floats all contribute to a carburettor that's reliable, user-friendly, and is easily tuneable for miles and miles of trouble-free operation.