Introducing the RM Z450 with Suzuki fuel injection. Our engineers developed the RM Z450 using experience gained developing fuel injection systems for Suzuki's legendary GSX-R road race bikes and the championship-winning QuadRacer R450 ATV. The result is the world's only mass-produced, fuel injected motocross bike, designed to help you blow away the competition. As if that breakthrough technology weren't enough, our engineers used their experience developing Ricky Carmichael's championship winning RM Z450 to redesign the RM Z450's chassis, suspension and brakes. That means it offers sharper handling, smoother suspension performance and more powerful braking than ever.