Specialized Stumpjumper FSR Comp EVO 26"

Discuss light weight issues concerning mountain bikes & parts.

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Joined: Fri Jun 13, 2014 8:31 am

by Chookz

Hey guys,
I regularly check this forum but this is my first post.
I'm looking to lighten up my 2014 Stumpy. I don't want to spend huge amounts of cash hence why i went the comp version and not the carbon.
It's an AM bike, but i generally ride XC trails with small-mid jumps here and there. When riding and jumping it feels a little heavy and sluggish.
Below are the specs from the Specialized website:

FRAME: M5 hydroformed tubing, EVO geometry, tapered headtube, PF30 BB, ISCG ’05, Command Post BlackLite routing, 142mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm travel
REAR SHOCK: Custom FOX Float CTD Evolution w/ AUTOSAG, Climb, Trail, Descend settings and reb adj., 195x51mm
FORK: Custom RockShox Revelation RC3, 3P damper, tapered alloy steerer, 3-position compression and reb adj., 15mm thru-axle, 150mm travel
HEADSET: 1-1/8 and 1-1/2" threadless, Campy style upper with 1-1/2" lower, cartridge bearings
STEM: Specialized Trail, 6061 alloy, 4-bolt, 6-degree rise, 31.8mm clamp
HANDLEBARS: Specialized All-Mountain, low-rise, 7050 alloy, 750mm wide, 8-degree backsweep, 6-degree upsweep, 31.8mm
GRIPS: Specialized Sip Grip, light lock-on, half-waffle aramid-infused, S/M: regular, L: XL thickness
Upgraded - Race Face
FRONT BRAKE: Formula C1, alloy caliper, metallic pad, S/M: 180mm, L: 200mm rotor
Upgraded - Shimano XT
REAR BRAKE: Formula C1, alloy caliper, metallic pad, S/M: 160mm, L: 180mm rotor
Upgraded - Shimano XT
BRAKE LEVERS: Formula C1, hydraulic disc, tooled reach adj.
Upgraded - Shimano XT
FRONT DERAILLEUR: SRAM X7, 10-speed, S3 direct mount for DMD, bottom pull
REAR DERAILLEUR: SRAM X9 Type 2, 10-speed, mid cage
SHIFT LEVERS: SRAM X7, 10-speed, aluminum trigger, zero loss
CASSETTE: SRAM PG-1030, 10-speed, 11-36
CHAIN: SRAM PC 1031, 10-speed, PowerLink
CRANKSET: Custom SRAM S-1250, 7050 alloy arms, 10-speed AM double, PF30 spindle, S: 170mm, Others: 175mm
CHAINRINGS: 36/24, w/ alloy guard
BOTTOM BRACKET: SRAM PF30, OS press-in bearings, sealed cartridge
PEDALS: Upgraded - Shimano XTR
RIMS: Roval 26, alloy disc, 21mm internal width, 32h
FRONT HUB: Specialized Hi Lo disc, sealed cartridge bearings, 15mm thru-axle, 32h
REAR HUB: Specialized Hi Lo disc, 4x-sealed cartridge bearings, 12mm thru-axle, 142mm spacing, 32h
SPOKES: DT Industry Stainless, 3X front/rear 2.0mm
FRONT TYRE: Specialized Butcher Control, 2Bliss Ready, 26x2.3", foldable aramid bead, 60TPI
REAR TYRE: Specialized Purgatory Control, 2Bliss Ready, 26x2.3", foldable aramid bead, dual-compound, 60 TPI
SADDLE: Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm
Upgraded - Prologo Nago Evo X10
SEATPOST: Specialized Command Post BlackLite, 3-position, adjustable height w/ air spring, remote operated, single bolt head, 30.9mm, S: 100mm, Others: 125mm travel
SEAT BINDER: Command Post, 7050 hard anodized alloy, single bolt, 34.9mm

The formula brakes kept losing pressure so I upgraded them to XT's, and the stock Specialized grips were too thin for my preference so i put some thick race face ones on there. I also put my prologo saddle from my previous bike for comfort.
Given Specialized use a lot of custom/stock SRAM components it's hard to find the weights online to know what is worth upgrading? Does anyone know the weights for any of these stock components?

So, where will I get the most bang for my buck? I'm thinking in order of weight savings:
Wheels - Preferably something UST ready
Crankset - Not sure what to aim for with weight here? The stock has an alloy bash guard which im sure weighs it down. I've never bought a new crankset before, will any BB30 set be compatible with the SRAM PF30?
Handlebars - I enjoy the 750 mm wide bar. Wouldn't want to go much shorter than 700 mm
Stem - The stock one is short, like 50 mm

Any suggestions? Please give weights, or advise of what kind of weights you think I should be aiming for as i look around online. Also the bike is full black, with some red highlights so anything matching that colour scheme would be appreciated

by Weenie

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