![]() ![]() For the rider, RXL throttle action was quick due to its light pull. The intake consisted of three 46mm butterfly throttle bodies. The cylinders and heads were unique to the EFI triple, helping the engine breathe easier and boosting power. Appearing the previous winter as a ‘limited build’ preview, the fuel injected RXL came into full production with evolutionary updates. The fuel injected motor differed from the carbureted version. Based on the carbureted 650 that conquered the Formula III World Championship in 1990, the fuel-injected version was said to add more performance and even increase fuel efficiency up to 10 percent. ![]() With its 650cc triple, the big-engined Polaris Indy became THE performance leader in 1991. To keep the 650cc triple cool, Polaris used aluminum extrusions mounted under the runningboard. ![]()
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