Trask High Powerflow Air Cleaner For Indian Scout The Trask Powerflow air filter is designed as a direct bolt in replacement for the very restrictive stock OEM Indian Scout air-box and filter. It greatly improves both the airflow and volumetric efficiency of the Indian Scouts engine, by allowing it to scavenge as much air as possible to fill the cylinders. Dyno developed and Dyno tested, this filter will provide the Indian Scout an instant increase of up to seven additional horsepower and torque in the powerband, with no additional mapping or re-mapping required. Made from only the best materials, consisting of high quality pliable rubber, four to six layers of cotton gauze, and epoxy-coated wire mesh, the filters are both durable, washable, and reusable. Trask Powerflow filters are designed to provide your motorcycle engine with excellent protection, that is made to last, while saving you money, and increasing your horsepower. Features: Completely serviceable Easy installation Made in the USA Sold each