Kawasaki's First 4-Cylinder 250 Replica Got New Bore, Stroke and Frame Just Two Years In

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RIDE HI spotlights Kawasaki's ZXR250 C/D (1991-99), the brand's first four-cylinder 250cc replica. The 1991 C-model revised bore from 48mm to 49mm and stroke from 34.5mm to 33.1mm, shifting peak power delivery of its 45ps from 15,000rpm to 16,000rpm. A new aluminum e-BOX frame raised rigidity by 25% while cutting 1.8kg of weight.