2014 Open-Class Dual-Sport Smackdown: Beta 520 RS vs. KTM 500 EXC

The KTM’s Keihin fuel-injected, SOHC, four-valve engine actually displaces 510.4cc, and uses a smaller bore and longer stroke than the Beta’s engine. Efficient engineering, such as designing the counterbalancer shaft to also drive the water pump, help to keep it compact.