Aftermarket CDI BOX, strictly tested, This is a Plug and play unit, direct fit, and easy to install. Durable mmet and exceeds OE Standard.. Compatible vehicle: It fits for Yamaha Timberwolf 250 YFB250 1994-1998, YFB250FW 4x4 1994-2000, Bear Tracker 250 YFM250X 1999 2000. MPN: Replace For Yamaha OE Part Number 4BD-85540-10-00, Z021-0045N, 0451018, 0452187. The KIPA CDI Fits yamah YFM250, It will completely remove the factory OE redline to unlimited and it also adds a little more timing to boost performance..
