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  1. #1
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    lightest FS 29'er

    OK guys, what's the lightest 29'er FS out there?

    Only rule is it must be ridable on a daily basis, so not just a fragile piece of art.

  2. #2
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    Rocky Mountain Element 29 999 RSL frame 2020gms for the frame only in a large, and about 2005gms in a medium, easy to build up a 22.5 lb everyday bike with groovy expensive bits.

    The complete factory 999 RSL build is 22.3 pounds without pedals.

    2013 Rocky Mountain Element 29 RSL ? New Carbon Race Bike, First Rides & Actual Weights!
    I'm a member of NSMBA and IMBA Canada

  3. #3
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    The new Trek Superfly frame is pretty light.

  4. #4
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    Re: lightest FS 29'er

    Rideable daily on what?

  5. #5
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    Quote Originally Posted by BDozer View Post
    OK guys, what's the lightest 29'er FS out there?

    Only rule is it must be ridable on a daily basis, so not just a fragile piece of art.
    Is this just a theoretical question, or are you planning to buy? Any budget limitations?

  6. #6
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    Quote Originally Posted by ddprocter View Post
    Rideable daily on what?
    Cross country style riding. Not downhill.

  7. #7
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    Quote Originally Posted by phlegm View Post
    Is this just a theoretical question, or are you planning to buy? Any budget limitations?
    Hey phlegm,

    A little of both. The question is a follow-on to my earlier upgrade thread. After getting some good advice in that thread I've decided to build up a 29'er FS.

    To that end, I'd like to know how far people have pushed the limits of weight on a daily ridable XC bike. I'm not looking for an off the shelf bike, rather, am interested in spec'ing one out piece by piece. So, having a list of some really light builds would be helpful.

    I've seen a few on here that were sub 9kg, but that's just what I've found. I assume there are many more sub 9kg bikes out there....I'm just curious how people got there.

    I suppose i should have made the subject "list of sub 9kg FS 29'ers with build details."

    As for budget, I'd say $5-7k range but that is flexible.

  8. #8
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    Thx for the details.

    First, I'd like to give props to rockyuphill who has been especially helpful to me in this forum. Suspect he's a fellow Canadian, but nonetheless his knowledge is invaluable.

    I wrote that preamble because I suspect he is a Rocky Mountain guy, whereas I'm a Specialized guy, so a bit of a difference there.

    I currently ride a 2011 Specialized Epic S-Works, which, IMO is THE standard for XC. I have some minor tweaks to my 29er, but it stands (with pedals) as 9.71kg/21.4 lbs (size Large). I don't readily have the core frame weight available (for 2011-2013), but it is fully carbon, including the rear triangle which is often alloy on other frames.

    I have no idea as to availability of the frame itself, but IMO, it would be tough to beat that platform.

    That said, the price is ridiculous (new), and I happened to find a mint used version (more like unused) which is what I'd recommend.

  9. #9
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    Quote Originally Posted by phlegm View Post

    First, I'd like to give props to rockyuphill who has been especially helpful to me in this forum. Suspect he's a fellow Canadian, but nonetheless his knowledge is invaluable.

    I wrote that preamble because I suspect he is a Rocky Mountain guy, whereas I'm a Specialized guy, so a bit of a difference there.
    Yep, another Canuck and definitely a Rocky rider. And props are good, otherwise I am inclined to lean until I fall over. Thanks.
    I'm a member of NSMBA and IMBA Canada

  10. #10
    Trail Ninja
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    Trek's Superfly FS SL might take the award for lightest frame.

  11. #11
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    Look beyond Rocky Mountain, Specialized or Trek...plenty of other brands too.

    No, I am not a fan of the above brands.

    Ridable bike is sort of a personal thing. I ride XC on a FS 26'' that weights 15lbs and it never failed me in 3 years. Some would not ride it at all.

    Chris.

  12. #12
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    The Scott Spark 900 PR is likely one of the lightest FS frames at 1890gms

    SCOTT Frame set Spark 900 PR (HMX) (BB92) - SCOTT Sports
    I'm a member of NSMBA and IMBA Canada

  13. #13
    Trail Ninja
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    Trek's lightest, fastest 29er ever: the 2013 Superfly SL - YouTube

    The Trek MTB Product Manager states 1650g (3.6 lbs) for SF100 SL in this vid.

  14. #14
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    My Niner Jet 9 RDO is built up with XX1, Easton EC90 XC wheels, Sid World cup XX fork, Racing Ralph tires. It is an XL frame and weighs 22.2 pounds. There are lighter frames out there but I wouldn't want to compromise any further on my components to sacrifice daily rideablity.

  15. #15
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    Quote Originally Posted by Varaxis View Post
    Trek's Superfly FS SL might take the award for lightest frame.
    And the Award for most warrantyed

  16. #16
    turtles make me hot
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    I don't really have any business bein' in this conversation because I didn't weigh the bike, but...
    I built my wife a 2012 Salsa Spearfish. I used Stan's Crest rims, triple butted DT Swiss spokes, XT cranks, 2x10 drivetrain, Reba Team, Niner RDO stem, Thomson post...
    Bike is WAY lighter than my Stumpjumper.
    I like turtles

  17. #17
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  18. #18
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    Quote Originally Posted by cloudbuster View Post
    Must be a winner! ...
    When I'm not riding I help beginner mountain bikers learn new skills at Texas Mountain Bike Trails.

  19. #19
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    Quote Originally Posted by cloudbuster View Post
    I've got this frame and it came in at 1950g
    cheers
    Pagey

  20. #20
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    Quote Originally Posted by cloudbuster View Post
    the 26" frame shows 1800g, likely a typo...

    Suspension Frame - 26er Carbon Suspension MTB Frame China Wholesaler

    but now you've got me thinking.... the frame looks familiar, like an un-painted big-name, can't place it right now though.

    Edit, it's the Scott Genius from a few years back...
    Last edited by shupack; 10-07-2013 at 11:21 PM.

  21. #21
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    Quote Originally Posted by pagey View Post
    I've got this frame and it came in at 1950g
    how do you like it?

  22. #22
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    2014 Spesh Epic is flippin' light weight. In the latest copy of MBA, there is a tricked out S-Works Epic 29er that came in a 19.6lbs. Where I live and ride, it could be a daily rider.
    ...and proud member of the anti-sock puppet desolation

  23. #23
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    Quote Originally Posted by shupack View Post
    how do you like it?
    Love it. I replaced an 26" Anthem X1 and this is a great matt hon weapon.

    Build
    Fox RP23 shock
    Reba RLT 100mm fork
    1x10 XT
    XT brakes
    Light bicycle carbon wheels (awesome)
    Racing Ralph tires
    3T finishing kit
    Fizik Kobi saddle
    cheers
    Pagey

  24. #24
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    Quote Originally Posted by pagey View Post
    Love it. I replaced an 26" Anthem X1 and this is a great matt hon weapon.

    Build
    Fox RP23 shock
    Reba RLT 100mm fork
    1x10 XT
    XT brakes
    Light bicycle carbon wheels (awesome)
    Racing Ralph tires
    3T finishing kit
    Fizik Kobi saddle
    Sweet. My wife's gonna kill me......

  25. #25
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    Quote Originally Posted by pagey View Post
    Love it. I replaced an 26" Anthem X1 and this is a great matt hon weapon.

    Build
    Fox RP23 shock
    Reba RLT 100mm fork
    1x10 XT
    XT brakes
    Light bicycle carbon wheels (awesome)
    Racing Ralph tires
    3T finishing kit
    Fizik Kobi saddle

    Weight?

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