CB400N 1983 muffler

Yes, these are the ones I go for, £115 for a pair delivered! (in the UK), though normally have to take 25mm of the front of them to get them to fit, otherwise they are fine once you paint the rivets at the back black  .  So say 140 euros Vs 500 euros for the originals.
I've  only one set of originals,so perhaps sometime in the future I can put them on my low mileage 250, all my other bikes use the pattern ones.



Using pattern mufflers, does not affect performance as far as I can tell, where as I think the original collector boxes are worth paying a little more for.