XR250R single cylinder enduro 4 stroke, single overhead camshaft, 2 valves RFVC. For 86 a single carburettor, longer travel suspension, aluminum swingarm.
Model 1986 chassis number ME06-5200001 to 5299999, Engine ME06E-5200001 to 5299999
North America Chassis No. JH2ME060XGK200001 to GK206454, Engine ME06E-5200001 to 5299999
Model 1987 chassis number ME06-5300001 to 5399999, Engine ME06E-5300001 to 5399999
North America Chassis No. JH2ME060XHK300001 to HK399999, Engine ME06E-5300001 to 5399999
Model 1988 chassis number ME06-5400001 to 5499999, Engine ME06E-5400001 to 5499999
North America Chassis No. JH2ME060XJK400001 to JK499999, Engine ME06E-5400001 to 5499999
Model 1989 chassis number ME06-5500001 to 5599999, Engine ME06E-5404455 to 5405294
North America Chassis No. JH2ME06XXKK500001 to KK599999, Engine ME06E-5500001 to 5599999