Here is one of the O R engines I received.
This engine came second in the European open 50cc class titles.
The O R engine is manufactured to extremely high standards by GM Phantom.
These engines are Italian made thoroughbred 2 stroke race engines.
The crankcases, crankshaft, cylinder, cylinder head, clutch and clutch drum/housing are all Phantom produced.
Both the internal and external appearance of the crankcases are CNC machine finished.
The Racing Crankshaft has feeder holes in the “webs” which give an additional supply of charge mixture to the rear cylinder boost port when the crankshaft is in the appropriate stage of its cycle.
The crankshaft is also available in both silver and gold stroked specifications.
This engine has a 6 Port arrangement with the Exhaust port flanked on either side by auxillery ports.
