This is a great product! I have always used K-N air filters and been very happy. The added conicle feature allowing more air flow is genius. The part slid right on and fit as well as the stock filter. This filter kit, along with a Motoworks slip-on pipe have dramatically increased the performance of my machine. I recieved the filter kit from Dennis Kirk ahead of the scheduled arrival date. Not a surprise because everything I have ordered from them in the past has arrived early. Thanks DK!