... wheel, 16" rear wheelSpecification:Drive system: chain Engine type: 125CC/150CC, single cylinder, 4 stroke, air-cooling Actual displacement: ... start Bore*stroke (mm): 56.5*49.5 (125CC); 62*49.5 (150CC)Max speed (km/h): ... Max power output (km, r/min): 8.0*8500 (125CC); 9.3*8500 (150CC)Max torque and rotating speed ... (N.m, r/min): 8.6*7500 (125CC) 10*7500 (150CC)Product size (mm): 1920*820* ...