REMEMBER WHEN…: POWERVALVE FOURTRAX 250R | CT Racing brings in motocross technology
**Editors Note-This story originally ran in Dirt Wheels April 2000
HOT MODS FOR QUADS
Several years ago, CT Racing developed the first aftermarket aluminum cylinder for the Honda 250R engine. Called the Pro-Cross (originally Pro-X), this new cylinder allowed ATV racers much more leeway with motor modifications than the stock 250R offered.
In the motorcycle motocross world, engines with various types of power valves have been standard equipment for well over a decade. Virtually every 250cc and 125cc race bike has…