2013 Beta 520 RS Specifications The Beta 520 RS has been given several updates that include stronger cam chain guides, a redesigned cylinder head that includes reinforced camshaft bridge, valve retainers, and cam chain tensioner. It is also equipped with updated counterbalance bearings for better reliability, a new oil drain plug so you can change the oil easier, and new redesigned front headlight and front fender support among other updates. Hariyono86.net