does anyone have and good suggestions on stopping exhaust leak at headpipe to muffler on a 250 trailboss 4x4

 

IF still available through Parts Unlimited OR Tucker Rocky there is an exhaust sealant strips that expand when hot and seal by Malcom Smith products. Cant remember actual name,but have used it years ago on 2-strokes and works better than any silicone plus helps on vibration leakage.