Our EX Power Filter feeds your TR-1 engine a steady diet of cool air delivering greatly improved acceleration and RPM. Replaces restrictive stock air box with a high-volume, precision-formed intake duct that attaches to the throttle body via a silicone coupler. Factory hull vents provide cool air that enters the system via an oversized K&N filter element. Also features an easy to install Engine Breather Upgrade Kit that eliminates power-robbing crankcase emissions from your engine's air intake. Includes detailed installation instructions.Note: For heavy surf use we recommend the use of our waterproof pre-filter. Part# RK13090PF-BK.