The CR series is Honda's line of off-road, two-stroke, motocross motorcycles. These bikes had Steel frames in 1997. The 1960-2007 models have engine displacements of 80, 85, 125, 250 or 500 cc. The 1997 and later 250s and 1998 and up 125s have aluminum frames. All CR models after 1985 have liquid cooling, a single rear shock absorber, and telescoping front suspension forks. In recent years, the CR 125 has been eclipsed by the CRF250R, and the CR250 by the CRF450R and all motorcycles in the CR series have been discontinued for the 2007 model year.