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KAWASAKI WORKS KX125 - 1991


Coming into the 1991 125cc AMA National Championships, Kawasaki hadn't won the series since 1984 when Jeff Ward took the championship. Kawasaki was looking for a rider that could win the tiddler class and Mike Kiedrowski was looking for revenge after being dropped by the Honda factory team at the end of the 1990 season. Kiedrowski had won the '89 125 Championship for Honda and had finished just one point behind Suzuki's Guy Cooper in the 1990 Championships.
Mike recalls, "Kawasaki hired me with the promise and understanding that I would win the championship for them! I felt a lot of pressure, but they gave me 100% backing and built the bike exactly the way I wanted it!" Kiedrowski's mechanic was Shane Nalley with Rick Ash doing the suspension and Jim Felt building the motors. "MX Kied" as Shane called him didn't have the fastest bike on the track, Mitch Payton called it a "Slug," but it suited him perfectly and they tested and modified the production based machine extensively.
Some of the engine modifications included stuffing the crank to increase crankcase pressure and filling the transfer ports with epoxy and completely reshaping. Engine weight was saving by using magnesium primary and ignition covers and shaving material on clutch and transmission components. Suspension was "Works Kayaba" and fine tuned by Ash with an emphasis on high speed compression control that Kiedrowski demanded.
Mike Kiedrowski has graciously loaned the machine to the Early Years of Motocross museum! Thanks - "MX Kied!"
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