In 1971 Kawasaki's original Mach III was joined by three more triples, the 750 H2, 250 S1 and 350 S2. The latter two machines were virtually identical, the S2 differing from its smaller sibling only in its larger bore and carburettors, and shorter wheelbase. Over-boring a 250 has always been the best way to make a quick 350, and the S2 did not disappoint with its 115mph top speed and 13.9-second standing quarter-mile. Equally importantly, the handling was much improved over the original Mach III's. Built for three years only, the S2 was superseded by the 400cc S3 in 1973 and is a relative rarity today. Offered with US title, this S2 is in original condition and was running only a couple of months ago. NOVA has been completed and all taxes/duties paid, making UK registration straightforward.