Anyone have a clue what the jetting would be for a '82 ATC 250R with a K&N air filter with a supertrapp 3 inch megaphone with no discs? And would a 38mm carb with the same jets as a 28mm carb work on the same engine right?

 

I RIDE RED AND HARD. Never heard of a Supertrapp Megaphone on a TWO-STROKE "R". As a RED RIDER I'm confused.

 

You can put a supertrapp megaphone 3" on any two stroke all you need is to possibly rejet and have a couple wrenches and a flat head srew driver to install it