Review on K&N KN-171C Motorcycle Oil Filter: High Performance for Harley Davidson & Buell Motorcycles - Compatible with Synthetic & Conventional Oils by George Miller

Wondering how they got 1 star? Must have been a customer error, this filter fits our '01, Dyna and our '05 Softail and also our '09 Electra and 10 Street Glide. That's right, these filters don't have the same dome as other filters, though. When measured, the difference was less than three thousand, which did not matter. So the 1 star reviews I can only imagine are people not qualified to change their own oil between the cross section and maybe the old gasket left on the bike I could find out if I read between the lines of a negative post. This. Filter works great!