Depends on the year. All the Four into Four stock exhaust systems for the CB500/550 are interchangeable except for the 77 and 78 models. These are very different. And, I'm fairly certain these brackets and the mount locations are different from the earlier models. These would all be K models. F models are 4 into1 they all interchange for the three years they were produced; 75-77. The engines all accept any of the exhaust systems. It's the frames, foot pegs, and foot pedals that differ between the F and earlier K models as well as the later K models 77-78.
The above applies to Hondas sold in the US. Cheers, Lloyd SOHC4 #11 72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F (2), 78 550K, 77 750F, 78 750F andrew harding wrote: >do you know whether cb500 four exhausts will fit a cb550 four? If so which >are the best brackets to use? > > >
