Well, my bike build is currently:
Rocky Mountain RMX Frame (large)
888 RC2
Full Saint drive train (+crank arms)
Avid Code breaks (front and back, 8" discs)
Cane Creak head, Crank Bros BB
Fox DHX5.0 Coil
Chromag wide bars
DeeMax rims (front and back)
Kenda Nevegal tires (Front and back)
Total weight: 51.2 lbs (never go up a hill on this thing)
That is basically a pure park build, my old race bike was a bitch to keep maintained so now I have a tank that only needs maintenance 2-3 times a year to keep it running in top shape.