Fitment - Replacement for Yamaha Bear Tracker 250 YFM250X 2001-2004. Compatiblity - Replaces Part Number: 4XE-85540-00-00. Feature - This CDI box can adjust spark advance angle automatically according to engine speed, making fuel fully burning and starting the engine more quickly. Simple Installation - The product can be directly replaced with the old or damaged one. The product is easy to install, but professional installation is recommended.
