Is it worth it to spend money on reducing the weight of your bike? What areas offer the greatest value for their weight saving benefits? Details of the proposed changes:

150g - Raceface Turbine Basic 35mm clamp (60mm)
93g - ENVE CARBON MTN STEM ($270)
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57g - $270

650g - Race Face Aeffect AL crank (175)
493g - SRAM XX1 Eagle GXP
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157g - $438

420g - Two tubes
000g - None (maybe a bit of weight for the sealant)
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420g - $0

568g - Shimano PD-M647 pedals
310g - Shimano XTR PD-M9000 Race Pedal
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258 - $97

335g - Race Face Ride 760mm, 35mm clamp (20mm rise, 8*rear/5*up)
163g - RACE FACE NEXT HIGH RISE HANDLEBAR 31.8mm
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172g - $119

270g - WTB Volt Race Saddle
150g - Rockbros Mountain Bike Seat Carbon Bike Saddle
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120g - $48

560g - Rockshox Reverb Stealth, 150mm travel
- Did not spec this out, weight savings could be 100-200g

1850g (approx) - WTB ASYM I23 27.5" w/ Novatec hubs
- Did not spec this out, weight savings could be 200g+
- Considered SC Reserve carbon at 1677g and $1600

Total Cost: $972
Savings: 1184g (2.6 lbs)
Old Weight: 30.6lbs
New Weight: 28