Top quality, chrome K&N style power air filter. We use these in conjunction with a Casa air bellow that connects to the airbox elbow, using a piece of pipe to connect the two together to stop the bellow folding in on itself. Comes with jubilee style clip supplied. 
 
Does NOT come with air bellow, 5th photo is for illustration purposes only. Can be used in conjunction with the CASA bellows or the new BGM type, these are available on our website.