From this I assume CMS must have tooled up to make decent 350/4 pipes

[AshimotoK0]

From Coastpath on eBay (he's ex-CMSNL and seems to sell a lot of their 'surplus/prototype' stuff) .From this I assume CMS  (& DS)must have tooled up to make decent 350/4 pipes

http://www.ebay.co.uk/itm/Honda-CB350F-muffler-kit-exhaust-set-new-Require-Chroming-/262581564736?hash=item3d2314b540:g:MRUAAOSwIgNXtByJ

[Johnwebley]

I seem to remember DSS  have  these in stock last year,

  they were in the adbox on the top right hand side of the website

 but,its good that rare parts are being re-manufactured

[AshimotoK0]

The only reason I posted was that I remember the heartache Roy on here had when trying to source decent originals.

[Seabeowner]

What I need is someone to make some 550F silencers. There seems to be a demand but I  don't know anywhere that can supply. I have considered using an Motad silencer and chopping it and getting someone to fabricate a fitting to the collector.