Hi Hans,chain are high wear items on the xr650l,I,ve snapped mine three times now so I maintain it meticulously.The main reason for this is the large power pulses that thumpers produce and with no Cush drive on the xrl the wear on the chain is even greater.
When you replace the chain and sprockets buy a xr650r front sprocket it has a larger contact area on the countershaft splines and saves them from wearing because of it,s extra width it may need to be ground down a little,but I well worth doing this mod as worn countershaft splines means an engine strip down.
Mike
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