• Other than the 4 into 2 non-original exhaust system, not too much to complain about, and as you noted, unobtainium. The original four into four system had something going for it –

    [image src=" 2yrh403fk8vd1hz9ro2n46dd-wpengine.netdna-ssl.com/wp-content/uploads/2014/07/2014-honda-cb350f-reproduction-exhaust-review-1.jpg" width="400px"/]

    Looks like David Silver Spares has produced a few reproduction sets in the past – probably will again in the future, though looks like out of stock at the moment – ultimatemotorcycling.com/2014/07/25/honda-cb350f-four-four-replacement-exhaust-system-review/

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