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Big Gun Rev Box CDI ECU Ignition Honda TRX400EX TRX 400EX 1999-2004

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Fits: Honda TRX400EX (1999 - 2004). Big Gun Rev Box CDI. The Big Gun Rev Box enhances the power curve and adds 2 horsepower. The Big Gun Rev Box is designed to enhance the rev limiter from 1000 rpm on...
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