![]() ![]() This is a compound system, a two-stage system. Each has its own, and although there have been twin-port Singles with a carb for each port, Yamaha is the first to use two different carbs. The separate intake ports don’t share a carburetor. The single overhead camshaft works four valves, a trend Yamaha resisted until recently. The stroke (84mm) remains the same, while bore has been increased from 87 to 92mm and displacement grows by a tidy 10 percent over the old XT and the competition. It is a replacement foF the XT/TT/SR500 engine, rather than a descendant. They are also unalike for equally sound reasons, so both will be looked at on the basis of what each offers. We could do this as a husband and wife dual test, or perhaps father and son, brother and sister, big guy and little guy, all to illustrate how different these two similar bikes are. The XT550 and XT200 offer a choice of offbeat themes. ![]() at opposite ends of the pod because one has an engine nearly three times larger than the other, with the rest of the various dimensions in scale. As the photos show, they look as alike as two peas. ![]() Use Monoshock rear suspension, motocross-style fenders and tank. They both have a four-storke single-cylinder engine with single overhead camshaft. Yamaha has introduced two new dual-purpose bikes. What a wonderful chance for fun we have here.
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