KTM win again in MX finals

New rims have helped shave an impressive 3.4 kg unsprung weight off the RC390 and the upgraded ByBre braking system shave another kg  while the frame is now 1.5 kg lighter also. EURO5 updates on the liquid-cooled, single-cylinder four-stroke engine with twin overhead camshafts, four valves, and electronic fuel injection…
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