Old Zchool – that’s how the guys at spanish custom builder La Perra Bikes call their newest beauty. Turning a classic inline-four japanese into a modern custom doesn’t sound like an easy job, but the result of the little company between Malaga and Sevilla is truly satisfying. The 1976 Kawasaki Z900 got a bandaged exhaust, low bars and black wheels, Öhlins forks, Brembo radial brake callipers and the latest wavy Galfer brake rotors. All in all, La Perra Bikes showed that turning a classic into a modern custom is far from impossible.