Royal enfield diesel the. oldest diesel bike. or we alsosay that the. most famous bike. In india and I this so in other countrys also. but in india this bike is the. first bike diesel bike in india. in since 1920 the royal enfield. launched this diesel bike is is the. first bike. which. runs on diesel engine. is the bike of fridom. when. bike is launched in india. so many. people buy this bike. in now days. this bike value is. much higher then the modren royal enfiled bike. because. of his old. condition. and the bike is. made up of. high. speed steel. which. does not. bend. while accident. is the the rough bike forever. I love this. bike.