Obtanium performance adapter is the needle bearing cage to prevent coil bind, right? If so, not necessary and loses the progressiveness... Or, real weenies run air shocks! That'd save a good 6 oz. Modded XT cranks are boss, it's not a lot of work for a good weight saving An e*thirteen SRS+ with a MRP Carbon bash is just under 20g less than an LG1+ Twenty6 Prerunner pedals are going to be lighter than nukeproofs, a good 40g (nukeproof are heavier than claimed by a long shot) SRAM is heavy, but if you're intent there is still gripshift! CK is heavy, use A2Z or Hope's 150mm rear hub with their super light 20mm XC hub up front. Save 10g with a carbon railed SLR, or 20 for the Technologica version (more exposed carbon, more concentrated padding) Slice and dice the KCNC post, you can get them down to 110g or above depending on your size of cut. Use a Woodman Deathrgrip Ti clamp, 9g Carbon bars! Syntace will soon be releasing their 740mm Vector DH (~230g). You won't miss the 2.5mm per end.. The 77 Designs stem is lighter than a Point1, also stronger. I'd advise it. Get some comfy BMX grips, cut them right and save 50g+ doing so. That's about it really, you could get into using alloy bolts and tuning too but that's a lot to get into. I'd say you could cut at least a pound off it. Have you added in the Weight of tubes or Stans & valve core?