here is the thread, for your bike you may want to refine the design a bit ;-)
http://www.gasgasrider.org/forum/sho...i_matt+snorkel
I have a buddy in germany who is the agent for db-dawg exhaust inserts for 4t, and he said he had tried to get the snorkel on his product list, but got the runaround from them and eventually gave up, so not surprising they are no longer available