MSD Enhancer 650/701

At lower rpm you’ll notice incredible acceleration and throttle response due to advancing the timing. Then as the rpm increases, the timing is retarded to the factory setting to
prevent detonation and engine damage. For racers, there is also a lower rpm limit that you can activate for quick and consistent holeshots. Everything you need to install the Yamaha Enhancer is supplied along with factory connectors for a direct plug-in installation!