Join Date: Apr 2019
Location: Austin Texas, USA area.
I just received an "Akrapovic" slip-on muffler with decibel-killer and mid-pipe, springs, etc, for my 2017 CB-500F. Cost just under $73 USD shipped from E-bay vendor "betterprice_motor". Took me an hour to fit, as I had to make a muffler hanger (I don't use the passenger footrests). I have not ridden with it yet but did run the engine and sound is a pleasant bit more than the OEM boat anchor of a muffler, not at all objectionable. Weight is 4# compared to 10# for the OEM muffler, via my old bathroom scale. Fit and finish are excellent. The mid-pipe end that joins the exhaust pipe was about .030" oversize, but the sturdy clamp joined them together nicely.
It looks fine and shipping was about a week at most. Very well packed. No instructions that I could see but after 66 years messing with motorcycles.....
I'm going to watch carefully how it performs (not looking for any improvement, there) but do hope it returns the 75 mpg I'd been getting with the OEM muffler. I won't be riding any differently (Slow is what I am). This muffler is not going to be as efficient as the product of Honda's engineers, but at low-moderate rpm I expect it will be fine; sound better and sheds 6# in the process. Upper rpm performance (I don't go there) likely will suffer with the Db killer fitted. Not a concern to me.
After a few weeks I'll report in again.
"You don't stop riding because you got old...You got old because you stopped riding,"