I have a cr125 motor with pro circuit pipe and the previous owner welded the stinger and silencer together to where i can't get the pipe out without cutting it. I was hoping to be able to cut the pipe between the stinger and silencer and install some sort of coupler so I can remove the pipe and silencer separate.
I used heater hose with two old-fashioned worm clamps on mine...it got ridden hard for 3 days in a row with no sign of anything melting. Should work fine for you as well.