you can get a slightly higher temp resin from EC here.  However i would agree with twinfox that realistically youd want a heat reflective barrier on the inside.  Especially if its for cosmetic reasons.

make sure the part is fully cured either during the process in an oven or using a post cure process as otherwise you will find it may go soft under high heat until it really is fully chemically cured throughout.

Hello Mike

I've did it this way: The carbon part was made with a standard epoxy resin thats heat resistand up to130°C. To get a better heat protection, I've bondet a heat protection on the inner side. As a heat protection you can use aluminium foil tape or an aluminium shieldet fibre glass. Both products can be found on any local motorsport parts dealer.

Dirk



Regards 

I dented my factory metal heat shield on my KX 450F and want to create a similar one out of carbon. I've made lots of carbon bits over the days but never a part that bolts directly to a high heat part. Temps reach 400F at the exhaust flange and the pipe bends and at about 12 inches from the flange is where the burn/heat guard mounts. For temps that would be likely around 350F, which resin should I use?

Mike