The S&S Super D alcohol carburetor has a 2-1/4 inch throat and is now available with a larger 2.150 inch Venturi that features an enrichment starting system.
Recommended for use on large displacement racing engines. Not recommended for most street applications. Low rpm throttling and midrange response will be poor on stock displacement engines. Machined for alcohol use only.
For 1966-Up Harley-Davidson® big twin and 1957-Up Sportster® models