Can't remeber off hand but I do remeber pulliing the old silencers and measuring......my Emgos came with adapters..not the best set up but they work ok.....
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The worst day riding beats the best day at work....no exceptions.
I just put on then removed the shorty JC Whitney mufflers. They are loud but not bad, (as the rider). They did sound really good, but there was a lot of backfiring during engine braking and they draw attention where ever you ride. My neighbor could hear me when I was wide open about 1/2 a mile away. I put my peashooters back on. Ron.
Ron,
It's my understanding that if you are getting the popping during deceleration, you might be too lean. A few adjustments would fix it if you really like the look and performance. There are plenty of threads about adjustments.