These have baffles which can be easily removed if you want

This includes BSA B25

longer that has the folded brim

These carburetors

If you have an old British motorcycle

S&S Super E Carburetor Assembly - fits Harley Big Twin & Sportster Made in the USA_No These have baffles which canThe S&S Super E Carburetor Assembly is a high performance upgrade for Harley Davidson motorcycles, designed to improve throttle response, power, and overall engine performance. Built with precision and quality, this carburetor is compatible with a wide range of Harley Davidson models, making it a trusted choice for riders and builders. Compatibility Fits 1955 2006 Harley Davidson Big Twin models and 1957 2006 Sportster models. See Additional