I have done over 2 hours of searching and I can't find specs on this filter other than dimensions. I am putting this on a Yamaha XVS1100 - WITH A RELOCATION KIT. The factory filter size no longer applies, and therefore is making this a royal pain to find info for. There seems to be only two relocation kits for these, and both specify the KN-303. I just can't find specific details on the K&N to accurately cross reference it to others such as WIX, NAPA Gold, M1, etc. I've searched websites, but they seem to offer too many filters that are similar but not an ideal match. My best assumption is it is a Yamaha 5GH-13440-50 (which seems to replace 5GH-13440-60 ). It's all running together at this point, so I'm hoping someone knows or knows where to look. Thanks in advance!