Diagnosis Conflict of Pipes

[Donkey]

I have a KXF450 06, which i am trying to fit a DEP S7 pipe on. The problem is that the Header pipe has an extra chamber, which sits very close to the Radiator hose fitting to the water pump. There is about a 2mm gap.
Will the close proximity of the Exhaust affect the water temperature, or worse still, melt the radiator hose?
I have tried to rotate the header pipe, but the more i do, the less the silencer fits?
Can anyone help with ideas or tips on what they did if they have the same set-up?

Thanks

[*BONESY*]

Try these dude have used same thing on cars and bikes over the years you don't have to get it from this place you can get it at car spares places and even Halfords

http://www.heatshieldproducts.com/thermal_sleeve.php