joeyt wrote on 02/05/19 at 15:04:53:I've been looking into cone engineering as you recommended, sir. Their 12" shorty looks like it'd fit the look I'd like, but they don't offer that with a baffle. Would adding a lollipop of some sort inside the straight through portion or just before it in the header remedy the lack of a baffle, or should I just give up on a small muffler and get the "quiet-er" model? What do you personally run on Rex?
Did you look under "Motorcycle Exhaust Builder Components" on their site ?
REX has a Test Unit muffler that was part of Cone Engineering R&D program about 14 +/- years ago. It started life as a large bologna shaped & chromed muffler for the big HD road bikes. I did change it slightly by completely removing the outer shell, and I've just used the inside which is the actual muffler. Besides I just REALLY like its shape.
It does have a straight through core of 1.75", with dual coil passageways around the core. Those passageways are made in slightly different size/shape. The muffler works well in low-mid range with a nice low rumble which builds in the upper range. It does aide, noticeably, in the prevention of the backfiring of the engine if/when jetting/tuning may not be perfect in some part of the range.
I did have a '09 S40 that I put both the chromed trumpet style and the quite core muffler on the bike. I liked them both. The trumpet looked very good and sounded great but it was loud. The quiet muffler looked good in the brushed SS, the welds perfect, good strong steel, and it had a nice low rumble when idling and it increased gently as you reached the high range. It was never what I think of as loud, just a nice rumble all the way.