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Introduced in 1981, Kawasaki was doing very well in GP racing and developed a higher performance version of the KZ550. The GPz used the same size 553cc engine, but featured higher compression, and camshafts with higher lift and more duration, and a bikini fairing. The first model, the KZ550D Gpz had the same TK22 carburetors as the KZ550, but with a slightly larger main jet which was increased from #92 to #94; later models KZ550H and ZX550A had CV carbs. The 1981 GPz550 was the undisputed king of the 550's at the racetrack, and in stock form would run the 1/4 mile at 12.65 sec, nearly as fast as the legendary Z1. A monoshock rear swingarm was introduced in 1982 on the KZ550H Gpz. In 1984 the new ZX550A GPz had revised valve timing and ignition timing, increasing power to 68 bhp. It was offered in silver with red and blue stripes as well as the introductory red. Other styling changes included a larger fairing and a new rear suspension.

Old Bike Barn offers a wide selection of parts to keep old motorcycles on the road. Things like engine gasket sets, carburetor kits, fork seals, levers, cables, brake pads and more to help you resurrect and maintain your Kawasaki KZ550. We also believe that any machine can be turned into a Café Racer, Street Tracker, Bobber or Chopper and we offer a wide selection of parts to retrofit almost any beast in those traditional styles. Our team rides and wrenches so feel free to reach out if you have questions about your Kawasaki KZ550!

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KZ550

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