Dynatek Rhino 660 CDI. This plug-and-play CDI removes the forward AND the reverse rev limiters and increases max RPM's to 8000. This is a high performance CDI without sacrificing the reliability of your Rhino. Fits the 660cc Rhino and is compatible with or without the digital dash. Does not require rejetting. You will instantly feel the difference after installing, installs in about 10 minutes. This CDI and a CVT filter are the first performance items you should get for your Rhino.