A few points the 350sxf is designed for MX eg a constant flow of air over the radiators & there is no catch tank for a boiling radiator.
So if you intend grovelling around in 1st gear in a muddy forest fit a catch tank & fan unit from KTM's parts catalogue.
This is a common problem on all 4strokes even at a MX meet , have seen many a CRF, YZF spilling the coolant on the start because they're been idling to long.
This is why there Enduro models have larger radiators.
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