I just talked to Coppersmith racing about new Ohlins forks and shock, since I ran the stuff on the 2012 bike. That stuff doesn't fit the 2014, so I asked him about the new KYB stuff on the YZ 450, 2014. He told me it is pretty damn good! Said it is really good out of the box.
Reason I asked, is I rode a 2014 bike with revalved suspension on it The suspension shop, who I will not name, totally engineered the new forks and shock with their own stuff. Why?
I thought the bike was horrible. He rode my Ohlins bike and wanted the damn stuff! He said he never rode a bike so good. I asked him if he ever rode the stock stuff and said "No".
Why does everyone think the the 2014 YZ needs needs new guts in the bikes suspension? KYB is probably the best stock stuff out there.
For what it is worth, I got the Ohlins to try, but as I said before in other posts, it didn't make me hardly any faster. I would have spent better money on lessons learning the new style of riding with your balls on the tank , like these young kids ride. I did think the best attribute to the bike was steering with the Ohlins on it though. Does turn nice....
Just my 2 cents