Rode my 450fx for the first time today, overall i was very impressed. Power was amazing, handling was very good right out of the box, I'll have to play with the clickers some, but I don't think I'll need a revalve. It never felt heavy to me at all and was extremely balanced. I put a Scott's damper, rekluse, and spark arrester end cap, and hand guards, other than that the bike is stock. I set the sag at 98mm and left the clickers stock For comparison I'm coming off a 2012 Ktm 300 xc with a sx head and sx cdi, revaled and set up suspension, and usually finish in the front third of the B class desert races stuff, no motocross for me. Let us know how it does in the tight stuff.