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For over 25 years STD Development has been setting the standard for the world's strongest aftermarket cases, high performance heads and related engine components for the Harley-Davidson ® and American V-Twin market.


Whether you are looking to replace the stock parts on a modified street engine, or building a nitro burning big bore drag bike, STD builds what many professional builders rate as the toughest, highest performing replacement components and drive train assemblies on the market. Applications are available for Panhead and Shovelhead models.


Contact Us:

STD Development
12155 Pangborn Ave.
Downey CA 90241

562-803-1407 - Fax

Office hours are Monday - Thursday 8:00 a.m - 4:30 p.m., Friday 9:00 a.m. - 1:00 p.m. Pacific time.


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