Taking a visually outdated machine with lackluster performance and turning it into a showstopper that can go like stink is one of the most satisfying feats for a custom bike builder to pull off.

Along with the hybrid tech, the Yamaha FZ-S Fi Hybrid comes with additional features like single-channel ABS and traction control for added safety. It weighs 300 lb (136 kg) and has a 3.4-gal (13 ...