The Dick de Jager 500cc four cylinder boxer two stroke is a very rare beast. As far as I know there exists only one engine. The König crankcases are known for weak casting and prone to crack. So de Jager decided to make a beter crankcase, the barrels are from Yamaha and the crank is a modified König one. The engine delivers 111 hp. Owner Luc de Smet from Belgium still races it at classic meetings with his female teammate Zoë Beun.For more pics see
