This Profi “DOHC 50” 4-cylinder inline racing engine was designed and built by Profi M. E. Czech Republic, in 2008. The 50cc engine burns methanol on glow ignition and sports a pressure lubrication system. Oil is added to the crankcase and is pumped up to the cam boxes where it drains back into the crankcase virtually lubricating all internal components. The engine is 10″-long, 6″-wide, 6″-high, and weighs 2 lbs.

The Profi “DOHC 50” 4-cylinder inline racing engine.

Exhibit added: August 1, 2011 - Last modified: February 2, 2023

Presented by The Joe Martin Foundation for Exceptional Craftsmanship