I now have a new type of scoop for the radiator, so you don’t need the side radiator. There will still be a hole in the side pod, but this will be used for supplying the rear brakes with fresh air, for better performance on tracks where the brakes are used a lot.

You can use the scoop on the top photo if the weather is not so hot. If this this is not enough then you can add the top part shown on the center and low photo. By using the scoop you can reduce the weight of the kart by removing the side radiator including hoses and the water it contains.

PS. The scope and the big radiator, have the same cooling effect as the big rear radiator and side radiator together without the scope.

There is not a side radiator on a new kart. 

Spare part number for the scope kit is 1824