Royal Enfield has launched Thunderbird 350X and Thunderbird 500X , priced at rs 1.56 lakh (2394 $) and rs 1.98 lakh (3038.6$) respectively. The 350X comes with 346cc air-cooled, single-cylinder engine which makes 20PS of power. The 500X features the 499cc air-cooled,single-cylinder engine which delivers 27.5PS of power & 41.3 Nm of torque The transmission of both is handled by a 5 speed gearbox.