The Triumph Speed Triple 1050cc, Sprint ST 1050cc and Tiger 1050cc K&N lifetime replacement air filters are designed to increase the horsepower and acceleration of your Triumph Motorcycle while providing excellent filtration. K&N filters are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. Simply remove the disposable air filter and replace it with a K&N; there is NEVER any cutting or fitting required. Stock replacement air filters are covered by K&N's famous Million-Mile Limited Warranty™ and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.