<P> Small XR models include the XR50R, XR70R, XR75R, XR80R and XR100R . They are much smaller in size in comparison to the other bikes in the series, and are designed for children, smaller riders, as pit bikes, or for recreational fun . The child actor Edward Furlong who plays the young John Connor sits on a towed XR80 in the film Terminator 2: Judgment Day, however his stunt double who was of legal age, needed to use the larger XR100 for his shots of physically riding the bike in the film, moreover, the audio tracks of the engines revving were taken from the more distinctive sounding 2 - stroke Honda CR 80 for dramatic reasons . </P> <P> The XR 50 is a small four - stroke 50 cc (3.1 cu in) child's entry level motorcycle, produced from 1969 until today . Originally it was called the Z - 50, then Trail - 50, the XR 50, CRF 50, and the mini dirt bike . </P> <P> The XR100R was first introduced with the R designation in 1985, four years after the XR100 was brought to market . A major difference between the two was a major rear suspension upgrade to a more race - like single coil - over design and a new swingarm over the traditional dual real coil - over systems on the XR100 . This suspension system was known as the Pro-Link system on Honda's . </P> <P> The XR 125 was released in 2003 . The 124 cc (7.6 cu in) engine generates 11.52 hp (8.59 kW) at 4,500 &; rpm, Only the 2010 XR125L has a kick starter . The XR 125 Shares the same engine as the Honda CG125 and produces a Max torque of 7 ft - lb, the top speed in real world conditions is between 55 - 60 mph with a fuel consumption of about 60mpg . </P>

What is the difference between a honda cr and xr