Are the end frames machined from billet stock or stamped? Is the bypass valve a steel ball with a stainless spring, or a stamped plate? Is the seam of the mesh media welded, or just folded? How much media is there in the element? Can you get a replacement seal for it 3 years from now?
I have the same Scotts I bought for my '06 in late '07 when I bought the bike. That makes it just about 4 years old. I had it tested last month. It still stops 100% of all particles larger than 33 microns. When I see a knock off do that, I may change my mind.
I have 3 stainlees filters made by Ready racing
who makes ready airfilters. Dont know if you are familiar with them. I bought the first one for my 06 450 back in 2006. I still have that same filter and use it in my 2010 450. since then i have bought two more of them just to have as spares ready when i change the oil.
The first one I bought still looks new and everthing is still intact and it is now 5 years old. I all ways wanted a Scott's filter but had trouble of finding one where I could order it. But now since I've used the RR ones I know how well they stand up and are about $40.00 some dollars cheaper than the scott's,I will just continue using them (not saying they are better than Scott's) just saying I have had good results with them and would recommend them.