IMS Fuel Tanks are designed to enhance the appearance of your motorcycle, yet provide greater riding distance per tank full. IMS tanks have larger capacity than stock, yet very slim and sleek. Perfect for the dunes, off-road racing, on the track, and during those long rides. These IMS fuel tanks are made with polyethylene crosslink for extra strength and durability. When it comes to fit, finish and quality, IMS fuel tanks are the best made in the industry. Fits: Yamaha YZ250F 01-02, YZ400F 98-99, YZ426F 00-02, WR250F 01-02, WR400F 98-00, WR426F 01-02. Requires 1998 - 2000 model YZF seat and shrouds.