 The most popular underbone for these purposes is the Honda XRM, Suzuki Raider 150 and the Honda Wave, although similar models from Kawasaki and Yamaha are also frequently used.In Singapore and Malaysia, it is not uncommon to see old bicycles customized with parts found on an underbone motorcycle, a growing trend popular with the youth.Underbone motorcycle racing are one of the most popular motorcycle racing class in Southeastern Asia region, which uses modified version of road-legal, production-based underbone motorcycle available for purchase in public, mostly manufactured by Yamaha, Honda, and Suzuki.