Page 139 of Kawasaki Motorcycles by Kawasaki USA

SPECIFICATIONS: EX250H6F ZZR250 ENGINE Type..................................................4-stroke, parallel twin Displacement ....................................248 cc Bore and Stroke ................................62.0 x 41.2 mm Compression ratio .............................12.4:1 Valve system.....................................DOHC, 8 valves Carburetion .......................................CVK 30 mm x 2 (Keihin) Ignition ..............................................Digital, with anti hotwire circuit Cooling .............................................Liquid Lubrication ........................................Forced lubrication, wet sump DRIVETRAIN Transmission.....................................6-speed, return, positive neutral finder Final drive .........................................Sealed Chain Primary reduction ratio ......................3.086 (71/23) Gear ratios: 1 st.........................2.600 (39/15) 2 nd........................1.789 (34/19) 3 rd ........................1.409 (31/22) 4 th.........................1.160 (29/25) 5 th.........................1.000 (27/27) 6 th.........................0.892 (25/28) Final reduction ratio...........................3.357 (47/14) Clutch ...............................................Wet multi-disc, cable operation FRAME Type..................................................Perimeter, composite of extruded and cast aluminum Wheel travel: front .....................125 mm rear ......................110 mm Tires: front .....................100/80-17 (52S) rear ......................140/70-17 (66S) Caster (rake).....................................26.5 Trail...................................................88 mm SUSPENSION Front: Type.....................37 mm telescopic fork Rear: Type.....................Uni-trak with stepped spring preload adjustability

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