Price: $188.95

UM-YBA-415
If your looking for an increase in horsepower then UM air boxes are the way to go. Designed to allow more air to flow into the engine thereby increasing power. They replace your existing stock air box and mount in the same location without any additional hardware. To complete your air box, also from UM Performance Products, is an air box filter cover that will keep dirt, sand, and other engine damaging debris from entering. Air box filter cover sold separately. For best performance we recommend you use K&N HA-4250 (86-89 trx250R) air filter for the Yamaha Banshee. After installation re-jetting is required. Consult your local dealer for information on jetting specs.