Technological tour de force. That s the only way to describe the original Ninja 600 sportbike of 1985. Packing a liquid-cooled 16-valve inline-four (the first ever in a middleweight streetbike). wraparound twin-spar frame. anti-dive fork and aesthetics snatched right from the Grand Prix circuit. the original ZX600-A1 was a dominant. bigger-than-life middleweight. Engine: Four-stroke. liquid-cooled. DOHC. four valves per cylinder. inline-four Displacement: 599cc Bore x stroke: 67.0 x 42.5mm Compression ratio: 13.3:1 Fuel injection: DFI with four 38mm Keihin throttle bodies. oval sub-throttles. two injectors per throttle body Ignition: TCBI with digital advance Transmission: Six-speed Final drive: X-ring chain Rake / trail: 24 degrees / 4.1 in. Frame type: Aluminum perimeter Front tire: 120/70 ZR17 Rear tire: 180/55 ZR17 Wheelbase: 55.1 in. Front suspension / wheel travel: 41 mm i...