I don't remember the size, but the Screaming Eagle was the same. I cut the clamp part off the stock one, and welded it on the new one. Had to make support bracket. Worked good though.Andy said:That's awesome! how did it fit up? Do you know what the outer diameter of the stock exhaust pipe is? I would also like to try fitting up different styles of slip on/clamp on mufflers but not sure what size to look for.
Show us your exhaustCobra 4" slip on - keeps the EPA stuff on, love the sound, not loud at cruise and rumbles at throttle
Cobra exposed intake- great look, has a air intake hiss and you can hear the lifters
Cobra FI2000 Fuel management - can adjust if you do any changes.