I have a Speed Sensor off a 2004 636 Kawi Ninja. This speed sensor should be the same for bikes 2003-2007 but pls check with a Kawi dealer. I bought another speed sensor thinking mine wasn't working, only to find out that there was nothing wrong with the original. It has approx 20,000kms on it & it retails for over $150. If you need a speed sensor I can sell you one for $75.