There's a sticky thread at the top of this forum (RIP Set Up Thread). If you go to the 2nd page of that thread you start to see the 2009/10 Hydroformed RIP weights and set ups. But the thread "So what does a dressed out RIP 9 weigh?" might be more informative with regard to weight.vwn8 said:
My XL size in RAW weighs 3600g right out of the box (that's 7.936 lbs. for the non-metric crowd):

Full build with Fire XC Pro tires is 28.85 lbs.
Full build with Maxxis Aspen race tires and my race pedals is 27.41 lbs

BB