Review on Optimized Performance Filter for KN 303 Motorcycle Powersports by Rory Stice

Love these filters! I have a 2002 ZX7R2007 ZX10R2011 Vaquero 1700 and these filters work great. I love that I can put them on and tighten them up a bit with the socket. I used to always use an oil filter wrench that wraps around the filter and tightens. It worked, but it took more and more effort to get her to blow. Then, after 3000 miles, when I tried to take them off, it took some effort. I've always believed in using OEM factory filters, but now I really prefer them. I will never use any other filter on my bikes unless it's one of those K&N pre-made filters.