How Fast Does a Honda CR125 4-Stroke Dirtbike Go?

The Honda CR125 dirt bike speed tests produced different results.

The top speed of a Honda CR125 four-stroke dirt bike may depend on several factors.

Considerations

The manufacturer's test for speed may be performed under ideal conditions. The claimed top speed by the manufacturer may not be the same as the top speed recorded in an independent road test.

Different Test Results

"Motorcross" magazine reported that the Honda CR125F four-stroke dirt bike it tested ran out of breath at 95 kilometers per hour (KPH). Honda's official publicity booklet for 2008, which was printed in the United Kingdom but includes American specifications, claims the dirt bike had a top speed of 100 KPH.

Contributary Factors

The top speed ultimately depends on aspects such as the dirt bike rider's weight and/or whether the wind is a tailwind or headwind. Other variables should be taken into account because a dirt bike is on the higher end range of typical drag coefficients for motorcycles. Factors including fenders, shrouds, helmets without full face shields and loose jackets all create little pockets that can increase the drag coefficient.

References

• "Motorcross;" Honda's Thumpers CR125f CR150f CF250R; Chris Boss; January 2009
• Honda Dirt Bikes Publicity Booklet; Play Dirty; 2008