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Racing News


Ex Machina: RIVA's Yamaha EX Waverunner Stage 1 Kit

I found myself laughing. In fact, I was laughing a lot. Unlike test riding the ludicrously fast (88mph!) RIVA-tuned GP1800 a few minutes earlier – which is serious business because one misstep at those speeds could result in an unexpected trip to the hospital – the lightly reworked Yamaha EX WaveRunner equipped with RIVA Racing’s Stage 1 Kit was pure, unrefined joy and it was showing on my face. The combination of an ECU tune, a new prop and a bit of breathing assistance for the EX TR-1 engine was all it took to turn Yamaha’s happy-but-ultimately-humdrum Rec Lite entry into ...