Hi nurse Julie , the picture they show is defo a cb400 ( 75-77 type sohc ) four fitted with one of their exhausts, they also show the parts components diagram too , wish I could figure out how to attach the screenshot I’ve taken to this post, it’s €449 for the whole system exlcluding x4 sealing rings .Must admit it wasn’t a company I’d heard of , just come across it while researching exhaust manufacturers for a replacement system, I currently have a motad fitted but have noticed small hole underneath silencer , shame as front pipes are very good.