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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
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    Trek's Superfly FS SL might take the award for lightest frame.
    Spec E29c
    Niner ROS9 SS
    Trek Crockett

    Be part of the solution, not the pollution.

  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.
    Spec E29c
    Niner ROS9 SS
    Trek Crockett

    Be part of the solution, not the pollution.

  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.

  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?

  26. #26
    amd
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    If you want a super light bike that is also very CAPABLE, then the S-Works Epic is your game. You can build it with XX1 and get it really light. Maybe take a look at wolf tooth components to get a custom chainring and match that with lighter crank arms. Spiderless perhaps? Used enve wheels with KCNC touchpoints and you've got yourself a rocket.

    The framesets are hard to find as I found out when building one a few months back. I've actually got a new 2013 in the box for cheap if you're interested.

    But these bikes rip. Great on the downhills and perfect for XC. While not everyone likes the brain, it does save weight with lockout cables and levers. So thats something too.

  27. #27
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    The Scott Spark is about as light as it gets. The S-works is super pricey and the brain system is quirky and adds weight.

  28. #28
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    How about the FRM ANAKIN FULL 29. Frames comes in at 1849 grams with shock. So might come in sub 1600 to 1700 grams. Heres a website:

    https://www.facebook.com/media/set/?...0244901&type=3

  29. #29
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    Quote Originally Posted by pagey View Post
    I've got this frame and it came in at 1950g
    Pagey, what size frame did you end up with? I've got the 17.5 and mine weighed in at 2,064g.

  30. #30
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    lightest FS 29'er

    Quote Originally Posted by hidperf View Post
    Pagey, what size frame did you end up with? I've got the 17.5 and mine weighed in at 2,064g.
    Mine is a 17.5 as well. the final build weight is 23lb
    cheers
    Pagey

  31. #31
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    Quote Originally Posted by pagey View Post
    I've got this frame and it came in at 1950g
    (without shock too!)

  32. #32
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    2013 S-Works Epic Sram XX1 complete factory bike weighs at about 9.5 kgs for a size s. This is pretty light and can be easily brought down to less than 9 kgs with some easy tweaks like tubeless conversion and lightweight tires, and sub 100g saddle change. 2014 one is lighter even but pricey. One can easily get good prices for 2013 stocks as most dealers are clearing them now. The Epic is no doubt a world champion machine.

  33. #33
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    Quote Originally Posted by mpower13 View Post
    2013 S-Works Epic Sram XX1 complete factory bike weighs at about 9.5 kgs for a size s. This is pretty light and can be easily brought down to less than 9 kgs with some easy tweaks like tubeless conversion and lightweight tires, and sub 100g saddle change. 2014 one is lighter even but pricey. One can easily get good prices for 2013 stocks as most dealers are clearing them now. The Epic is no doubt a world champion machine.
    I agree with you on the Sworks Epic, but you might be a bit aggressive with your weight estimates. After tweaks (moving to 1X10 and various lighter parts) my 2011 size L got down to 21.42 lbs / 9.72 kg. That includes pedals, ready-to-ride. Maybe newer frames have shed additional weight since 2011.

    Re the saddle, lightest I'm aware of is a full-carbon that I use at 115g. If you've found a sub-100g version, please share. :-)
    Last edited by phlegm; 10-17-2013 at 10:16 AM.

  34. #34
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    I have this saddle in Flat finish and on my scale it was 77.3g

    Mcfk Carbon Saddle : Fairwheel Bikes, Cycling Boutique
    I got some pretty decent Niners!

  35. #35
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    Ah, Mcfk, should have thought of them, but $350? Yikes!

    My eBay carbon was ~$50.

  36. #36
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    since its been mentioned a few times on here. here is the weight of my superfly 100 team. no pedals.
    Attached Thumbnails Attached Thumbnails lightest FS 29'er-1385109_10152310064062571_597228732_n.jpg  


  37. #37
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    How do you ride without pedals?

  38. #38
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    Quote Originally Posted by amd View Post
    If you want a super light bike that is also very CAPABLE, then the S-Works Epic is your game. You can build it with XX1 and get it really light. Maybe take a look at wolf tooth components to get a custom chainring and match that with lighter crank arms. Spiderless perhaps? Used enve wheels with KCNC touchpoints and you've got yourself a rocket.

    The framesets are hard to find as I found out when building one a few months back. I've actually got a new 2013 in the box for cheap if you're interested.

    But these bikes rip. Great on the downhills and perfect for XC. While not everyone likes the brain, it does save weight with lockout cables and levers. So thats something too.
    The Epic's are amazing bikes. I heard the new S-works is 19 pounds fully built. That's sick. Then again you'll pay close to 10k for it. LOL!
    When I'm not riding I help beginner mountain bikers learn new skills at Texas Mountain Bike Trails.

  39. #39
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    Quote Originally Posted by phlegm View Post
    How do you ride without pedals?
    Well then I guess you're not a weight weenie.

    What is this "ride" thing you speak of?

    j/k for the lulz. dont hate.

  40. #40
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    Quote Originally Posted by squareback View Post
    Well then I guess you're not a weight weenie.

    What is this "ride" thing you speak of?

    j/k for the lulz. dont hate.


    Still waiting on the weight w/ pedals tho. Any update marcymarc?

  41. #41
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    The epic is a killer race bike, i have had a couple of them. The brain adds a bit weight but works the way it has to do!

    The first one is my old race bike, the weight was 9,6 Kg with room for improvements!

    The second one is the bike i have now, the weight is 9,7 still room for improvement. But rides like a champ!

    I think if you have a endless budget it could get under 9 kg, light but also ends up pretty expensive!
    Attached Thumbnails Attached Thumbnails lightest FS 29'er-l1000790redigeret.jpg  

    lightest FS 29'er-l1000991.jpg  


  42. #42
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    I'm building a rocky element 999rsl. It should weigh sub 10kg and will cost under $6000. That's with maxis aspen tires and a fox fork. Could weigh under 9 with stupid light tires and a crappy fork

  43. #43
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    Quote Originally Posted by benson_chris View Post
    I'm building a rocky element 999rsl. It should weigh sub 10kg and will cost under $6000. That's with maxis aspen tires and a fox fork. Could weigh under 9 with stupid light tires and a crappy fork
    Do you have a build list you can share?

  44. #44
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    fox float ctd 100mm fork
    Stan's ztr race gold wheelset
    Maxxis aspen set up tubeless
    Sram x01 drive
    Sdg seat and post
    Easton haven bar and stem
    Alligator wind cutter rotors
    Crank bros eggbeaters

  45. #45
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    I've just done a xxl 2014 Rocky Mountain element. 10.27kgs.

    Fox ctd 100mm
    Enve xc's with RaRa rear and RoRo front
    Xtr 10x2 with raceface next sl crankset
    Xtr m987 brakes, xt 160mm rotors
    Easton ec90 seat post, fizik Antares 00 seat
    Easton ea90 stem
    Easton ec70 wide bars
    Xtr pedals

    Dream bike, nice and strong and rides really well.

  46. #46
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    Quote Originally Posted by bh78 View Post
    I've just done a xxl 2014 Rocky Mountain element. 10.27kgs.

    Fox ctd 100mm
    Enve xc's with RaRa rear and RoRo front
    Xtr 10x2 with raceface next sl crankset
    Xtr m987 brakes, xt 160mm rotors
    Easton ec90 seat post, fizik Antares 00 seat
    Easton ea90 stem
    Easton ec70 wide bars
    Xtr pedals

    Dream bike, nice and strong and rides really well.
    Did you weigh your XTR 987 brakes without rotors?

  47. #47
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    Anyone know how to tell the difference between 2013 and 2014 xtr race brakes? Bought from pricepoint one month ago so I'm assuming they're 2014.

  48. #48
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    2014 has the carbon brake lever, 2013 does not.

  49. #49
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    Is it carbon if it's flat black with small dimples?

  50. #50
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    I don't think that the M987's have started shipping in the US yet, so most likely it's the older model. Not that there is anything wrong with those brakes!

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