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ATV Sport

Honda CDI swap.(WRENCH THIS)(motorcycle maintenance)(Brief Article)

Honda CDI swap.(WRENCH THIS)(motorcycle maintenance)(Brief Article) Q Is it possible to swap the CDI out of a Honda CRF450 and put it into my TRX450R? I was told that the timing in the TRX is slightly different. Charlie Lake via the …

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ATV Sport

four-stroke porting basics.(all terrain vehicles)

Head games: four-stroke porting basics.(all terrain vehicles) Kelley, Jerrod Whether the four-stroke engine powering your quad has four valves or five, it operates in the same four-stroke pattern. As the intake valves open and bring in the air and fuel mixture, the piston falls. After the intake stroke, the piston cycles back up and squeezes […]