Features: 1) YX 140cc big bore engine 2) Ported head with large inlet valve diameter, 23mm / 27mm 3) Ally cylinder 4) High compression piston 5) Inner rotor kit with billet alloy backing plate 6) Balanced crank shaft 7) CDI unit with rev booster, super spark coil pack 8) Large efficient alloy oil cooler 9) Race cam 10) Keihin 26mm carburetor, port matched manifold, round high flow sponge air filter 11) 4 speed transmission, strengthened gears, all up gears N1234 12) Clutch mounted on main shaft, starts in any gear 13) Billet alloy dress up kit: cam cover, head sink, rocker arm covers 14) Includes kick starter, gear shifter, front sprocket 15) Engine: 4-stroke, oil-cooled, single cylinder, manual clutch, horizontal type 16) Cooler: oversized high efficiency alloy oil cooler 17) Bore (mm): 56 18) Stroke (mm) 57 19) Cylinder capacity (ml): 140.39 20) Net maximum torque: 9.5N.m/5,500 21) Mini fuel consumption: 354g/kWh 22) Valve gap (mm): 0.05 + 0.02 23) Fuel mark: SAEAPI 15W/40-SF 24) Engine oil consumption: 8g/kWh 25) Lubricating system: pressure splash 26) Engine oil capacity: 1.0L 27) Maximum output: 12hp 28) Size: 435 x 285 x 235 29) N.W: 25 + 1kg 30) Transmission type: 4 speed manual, 4 gears up N1234, and clutch on main shaft 31) Transmission ratio: 1st gear: 3.272 (11/36), 2nd gear: 1.937 (16/31), 3rd gear: 1.350 (20/27), 4th gear: 1.043 (23/24) Packing: Carton YXMS Payment Terms: T/T