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38mm is the narrowest they do, but you could get around that by zapping on an adapter at each end, which shouldn't be too hard. COst $43+gst / meter

Autobend exhaust products in East Tamaki 0800 288 623. Avoid Pit Stop, they will ream you. Usually comes in metricised imperial increments, so 41mm, 45mm, 51mm etc (1 5/8", 1 3/4", 2" etc)