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  1. #1
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    New bike build.. need help

    I used to mountain bike with an S-works epic about 8 years ago.. I retired from mountain bike and got into triathlon.. Now heading back to mountain bike, I just picked up an used 2017 s-works stumpjumper 27.5 frame.

    The frame comes with:
    Seat binder clamp, Alloy, 34.9mm
    SRAM PF30, OS press-in bearing - in good condition
    Cable routing inserts
    SRAM XX1 Eagle, carbon, 30mm spindle, 32T
    S.W.A.T. box
    Rear shock, Custom Íhlins STX, Single Tube design, Rx Trail Tune, 3rd Chamber air spring technology, AUTOSAG, adjustable compression & rebound damping, 197x48mm
    Downtube protector
    Derailleur hanger
    Rear axle, 12x148mm

    I just started reading on boost and all this new stuff.. getting a little confusing.. Anyway, I have the following spec'd out. Is there anything obviously wrong or incompatible? And anything else I need? Anything you would swap out?

    Frame: 2017 sworks 27.5 stumpjumper
    Fork: RockShox Pike 150 travel, 15x110, 51mm offset
    Stem: Syntace F109, 6-degree rise, 31.8mm clamp or FSA 12-degree
    Handlebars: Specialized sworks trail carbon
    bb: included in frame
    crank/chainring: included with frame, xx1 eagle
    pedal: already own this
    rear derailller: SRAM Rear Derailleur XX1 Eagle Type 3 12 speed Black
    cassette: SRAM Cassette Eagle XG-1295 10-50 12 speed
    brakes: SRAM GUIDE RSC
    shifters: SRAM Shifter XX1 Eagle Trigger 12 speed SRAM Rear with Discrete Clamp Black
    chain: SRAM Chain PC XX1 Eagle HollowPin 126 links PowerLock 12 speed Black
    seatpost: FSA K-FORCE LIGHT SB0 Bike Seatpost 30.9mm X 350mm Carbon or Thompson Masterpiece or Fizik Cyrano R1 30.9
    saddle: undecided, probably spec henge
    tires: undecided
    wheels: mavic or dt swiss, 15x110 front and 12x148 rear
    Headset: How do I choose this ?
    Spacers: FSA carbon spacers
    Disc Rotors

    Also, if I find a 140mm travel RockShox fork thats super deal, will that be an issue considering the frame originally comes with a 150mm fork?

    I'm trying to keep this bike in a lower budged.. recommend a wheelset that will be around $500-700?
    2017 Sworks stumpjumper 27.5 (currently building)

  2. #2
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    No responses?... eh well... I have almost everything ordered so I guess hoping everything is compatible... The tires looks like it may be too big for the wheels...

    I'm already over budget cause I didn't antipciate on buying carbon wheels..
    Only thing left is figure out the fork and brakes. I skimped on the cassette and will likely get cheap brakes..

    Frame: 2017 S-works Stumpjumper 650b
    Fork: ? -- most likely RockShox Pike 150 or Fox Factory 34 150
    Headset: ?
    Spacers: ?
    Stem: Syntace Mega 2 60mm
    Bar: Specialzied S-works mini-rise
    Shifters: SRAM Shifter XX1 Eagle Trigger 12
    Brakes: ? -- most likely SRAM guide R
    Grips: ?
    bb: SRAM PF30
    Crank: XX1 Eagle
    Pedal: Shimano XTR
    Chainring: XX1 Eagle
    Rear Derailler: SRAM Rear Derailleur XX1 Eagle Type 3 12 speed Black
    Rear Cassette: SRAM Cassette Eagle XG-1275 10-50 12 speed
    Wheel: Mavic XA Pro Carbon
    Seat Post: Specialized Alloy
    Saddle: Specialized Phenom Expert
    Tires: Specialized Butcher 2.6
    Chain: SRAM Chain PC XX1 Eagle
    2017 Sworks stumpjumper 27.5 (currently building)

  3. #3
    turtles make me hot
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    I just saw this post now. I could have helped you save some money.
    I've built a few bikes with GX Eagle and a Sunrace cassette. Works flawlessly and costs considerably less.
    Use Shimano SLX brakes.
    Race Face Aeffect Cinch cranks are cheap and light.

    Frame looks like it uses an integral tapered headset. Cane Creek 40 is good stuff without spending 110 money.
    I like turtles

  4. #4
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    Your first list was pretty baller

    Quote Originally Posted by 125mph View Post
    No responses?... eh well... I have almost everything ordered so I guess hoping everything is compatible... The tires looks like it may be too big for the wheels...

    I'm already over budget cause I didn't antipciate on buying carbon wheels..
    Only thing left is figure out the fork and brakes. I skimped on the cassette and will likely get cheap brakes..

    Frame: 2017 S-works Stumpjumper 650b
    Fork: ? -- most likely RockShox Pike 150 or Fox Factory 34 150
    I prefer the pike, it feels stiffer and controlled to me. If you're set on the Fox you could save some money on a performance Elite, they have the same internals and I can't tell the difference between them.
    Headset: ?
    Baller would be Chris Kings but cane creek 40 work great
    Spacers: ?
    Stem: Syntace Mega 2 60mm
    Bar: Specialzied S-works mini-rise
    Shifters: SRAM Shifter XX1 Eagle Trigger 12
    Brakes: ? -- most likely SRAM guide R
    Grips: ?
    bb: SRAM PF30
    Crank: XX1 Eagle
    Pedal: Shimano XTR
    Chainring: XX1 Eagle
    Have you considered an Absolute Black oval? they are cheaper, durable enough, and you may like spinning an oval
    Rear Derailler: SRAM Rear Derailleur XX1 Eagle Type 3 12 speed Black
    Rear Cassette: SRAM Cassette Eagle XG-1275 10-50 12 speed
    Wheel: Mavic XA Pro Carbon
    For less money I would go I-9s with wider Lightbike rims. At least 30mm internal rim width, especially with 2.6 tires, 35mm preferred. For more savings use DT350 hubs
    Seat Post: Specialized Alloy
    A dropper is standard now a days on a bike with this much travel. If you don't feel the need for one on the trails you ride you could be overbiked
    Saddle: Specialized Phenom Expert
    Tires: Specialized Butcher 2.6
    Chain: SRAM Chain PC XX1 Eagle
    You could go with an xo1 drivetrain, it has all the meaningful upgrades (ie. carbon crank, forged body, stainless pins, adjustable lower paddle, better bushings, ti spring) without the carbon bits. Not sure with Eagle cassettes but with 11sp I preferred the cheaper pinned cassette. It seemed to creak less than the snapped together xo1/xx1.

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