Dayun Defender Bike Price in Bangladesh February 2020. Which Engine Type is Single Cylinder, 4-Stroke, Air-cooled. This bike is powered by the 148 (cc) Engine. Dayun Defender Generates Maximum Power 8.5/7500 rpm and it's Maximum Torque is 11.5/6000 rpm. Transmission duties are taken care of by a 5 Speed Gearbox. Dayun claims that the bike offers a mileage of 50 Kmpl (approx). Dayun Defender Front Suspension is Telescopic and Rear Suspension is Mechanical Spring. Dayun Defender Price is 129,900.00 Taka (approx). Click Here to find Dayun Motorcycle Showrooms in Bangladesh.