Koslow Engineering 1928 Hat

When Ignaz Schwinn unexpectedly closed the doors at Chicago-based Excelsior Motor Mfg. owner in 1931, engine designer Andy Koslow, convinced his boss to allow him to retain the blueprints and molds to his engines and promptly opened Koslow Engineering that same year. Koslow would go on to build limited examples of his meticulously handcrafted OHV motorcycle engines, but really made a business out of designing and building performance parts for other manufacturers, including adapting his now-legendary OHV heads to their powerplants. This design is based on the company logo which was proudly emblazoned on every Koslow made part.