The wheels are pretty light, then I started out with minion exo tires- which were not usable I found out. Those rotors are much lighter than Avids, pedals are also very light but fragile (The plates bend if you hit something really hard but since they come completely apart I could always straighten the plates and reassemble.) Then those grips are light as is the seat an post.
After scrapping the tires and grips then adding some black ops pedals and a 2011 boxxer wc it moved the weight up to 36.1
Grips were ESI chunky silicon- 60g a pair, but they bottom out on the bar on really hard impacts. Rotors are Ashima available through J+B importers. I bought a pair after chatting with the designer at interbike last year and I will never go back to regular rotors. Just 113grams for a 185 and they are half the price and run cooler. But they will chew a resin pad up pretty quick so I recommend only running semi-metallic
their made of a silicon foam and they are not really meat for dh use so when you hit really hard you hand litterally feel the bar, as if the grip wasn't there. They fully compress and you bottom out the like 1/4" of grip travel