Clear Icon
Search Icon
Clear Icon
Search Icon
Clear Icon
Specialized Icon
  • Bikes
  • Parts
  • Apparel
  • Accessories
  • Custom
  • Sale
  • Inside Specialized
  • Support
  • Specialized Icon
    Custom
    Arrow Back Icon
    Specialized Icon
    Inside Specialized
    Arrow Back Icon

    Men's Stumpjumper ST 29

    Icon

    2019 Men's Stumpjumper ST 29

    The new Stumpjumper ST uses new tube shapes and an asymmetrical design to ensure that you get awesome ride characteristics. So get ready, because the Stumpjumper ST Alloy 29 is sure to exceed your expectations of how a trail bike should ride.

    Our design goal for the new Stumpjumper was simple—build the ultimate trail bike, one that feels telepathic. And it turns out that this feeling all comes down to stiffness. Think of it this way: when the frame's telling your hands one thing and your feet another, your brain gets confused with the imbalance and the bike feels unstable. In order to fix this, we had to get to work on dialing-in the materials and shapes.

    We continued down the suspension path with a custom Rx Trail Tune on both the fork and rear shock. Suspension performance is highly dependent on frame, wheel, and rider size, so we use our Rx Tune to get each bike to land in the middle of the adjustment spectrum, and this gives you the biggest possible range to fine-tune your ride. Another focal point of the tune was matching the suspension characteristics between wheel sizes—we developed a specific Rx Tune for each platform. So, no matter what wheel size you prefer, you'll get perfectly linear suspension.

    Steps were also taken to make this bike easy to live with. Threaded bottom brackets make a triumphant return, and we made room for up to a 2.6" tire. You're also free to run whatever aftermarket rear shock you want, since we're using standard metric shocks. And customization is furthered with a Flip Chip that lets you to dial-in your Stumpy to your riding style. Switch it from High to Low and it drops your bottom bracket 6mm and slackens the head tube by half-a-degree. Little details also jump out to surprise you, like a newly designed ribbed chainstay protector that makes chain slap a thing of the past and nearly silences the drivetrain.

    The build here is no-nonsense with a focus on dependable, high-performing parts, like Shimano SLX front and rear derailleurs, Tektro Gemini disc brakes, a RockShox Recon RL fork with 130mm of travel, a custom X-Fusion 02 Pro RL rear shock with 120mm of travel, and wide alloy wheels.

    Technical Specifications

    Add Icon

    FRAMESET

    FRAME

    M5 alloy chassis and rear end, asymmetrical design, 29 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 120mm of travel

    SUSPENSION

    FORK

    RockShox Recon RL, Solo Air, 51mm offset, rebound adjust, lockout, 15x110mm Boost™ Maxle® Lite thru-axle, 130mm of travel

    REAR SHOCK

    X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, pedal platform, 190x42.5mm

    COCKPIT

    HANDLEBARS

    Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 780mm width

    STEM

    Specialized, 3D-forged alloy, 4-bolt, 7-degree rise

    GRIPS

    Specialized Sip Grip, half-waffle, slip-on

    SADDLE

    Body Geometry Henge Sport, steel rails, 143mm

    SEATPOST

    Specialized 2-bolt head, forged alloy, 5mm offset, micro-adjust, 34.9mm

    SEAT BINDER

    Specialized bolt-type, alloy, 38.6mm

    BRAKES

    FRONT BRAKE

    Tektro Gemini Comp, hydraulic disc, resin pad, 200mm

    REAR BRAKE

    Tektro Gemini Comp, hydraulic disc, resin pad, 180mm

    DRIVETRAIN

    SHIFT LEVERS

    Shimano SLX, 11-speed

    REAR DERAILLEUR

    Shimano SLX, Shadow Plus, 11-speed

    CASSETTE

    SunRace, 11-speed, 11-46t

    CRANKSET

    SRAM NX, Boost™, direct-mount XSYNC, Powerspline

    CHAINRINGS

    Steel, 30T

    BOTTOM BRACKET

    SRAM Powerspline

    CHAIN

    KMC X11, 11-speed w/ Missing Link™

    WHEELS & TIRES

    RIMS

    Double-wall, 27mm internal width

    FRONT HUB

    Specialized, sealed cartridge bearings, 15x110mm spacing, 32h

    REAR HUB

    Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h

    SPOKES

    Stainless, 14g

    FRONT TIRE

    Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"

    REAR TIRE

    Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"

    INNER TUBES

    Standard, Presta valve

    ACCESSORIES

    PEDALS

    Specialized Dirt

    * Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.

    Geometry

    Add Icon
    SMLXL
    Crank Length170MM170MM170MM170MM
    Handlebar Width780mm780mm780mm780mm
    Stem Length50MM50MM50MM50MM
    Saddle Width143mm143mm143mm143mm
    Seatpost Length375mm375mm435mm435mm
    Stack612mm612mm635mm649mm
    Reach415mm435mm455mm480mm
    Head Tube Length100mm100mm125mm140mm
    Head Tube Angle67.5°67.5°67.5°67.5°
    BB Height333mm333mm333mm333mm
    BB Drop39mm39mm39mm39mm
    Trail99mm99mm99mm99mm
    Fork Length, Full540mm540mm540mm540mm
    Fork Rake/Offset51mm51mm51mm51mm
    Front Center708mm728mm758mm789mm
    Chainstay Length437mm437mm437mm437mm
    Wheelbase1143mm1163mm1192mm1223mm
    Top Tube Length, Horizontal570mm593mm624mm657mm
    Bike Standover Height750mm756mm769mm770mm
    Seat Tube Length380mm410mm455mm505mm
    Seat Tube Angle75.8°75.5°75.1°74.7°
    Geometry

    Rider Reviews

    • 4.8
    • 13 Reviews

    shocked how good this bike is

    this is my second stumpjumper and am shocked how well this bike rides and handles. A major improvement in control and body position lets me feel confident about my abilities . I am not only glad i purchased this bike but also proud of being a stumpjumper owner .


    Name:
    Crash B.

    Helpful?

    I would

    I'm 11 years olds and I race this bike and it is amazing.It Hanes everything I through at it and more.Super easy to do maintenance on it.It is a all around great bike


    Name:
    Bowman W.

    Helpful?

    Great bike BUT

    I've had this bike since March and put on it about +/- 200 Miles. I love the geometry of the frame and the way it feels while riding. However, the drive train is almost impossible to adjust. Permanent noises when shifting, inconsistency and unreliability is the common denominator of the drive train combination it comes with. I've taken to the dealer and the best I can get is: Yes, that's the issue with these bikes. No Happy... my friends have other brands and my bike is always matter of laugh when we ride together.


    Name:
    John

    Helpful?

    Had it for 4 days

    I immediately took it down to alafia and up ocala to ride on those trails. This bike handled every challenge I threw at it. My choice was between the giant anthem and the stumpjumper St. Very happy with my decision. Very responsive, great on the trails, and a great comfortable ride. Highly recommend.


    Name:
    Trailterror

    Helpful?

    Would purchase this again.

    Love the back suspension and front shocks Thanks specialists from specialized!!!


    Name:
    M F.

    Helpful?

    Awesome Bike

    it's much lighter than my previous bike, it's nibble, and easily attacks the terrain. And the ride....is as smooth as a Cadillac. The bike is responsive and doesn't beat you up on the trail, it absorbs the bumps and keeps on going.


    Name:
    David

    Helpful?

    Absolutely love it!

    This bike has been amazing for me! I have had the bike for around 5 months now and have pretty much rode it through all different types of riding. (Enduro, XC, downhill, trail, super Gnar and much more!) The bike has done extremely well with everything! The only issues I have had with the bike was with the rear shock developing some wheezing. However, I contacted the manufacture and they are working on getting if fixed under warranty! So, other than that I have absolutely no complaints at all! The bike is at a wonderful price point and for what you get it's amazing! I would say that anybody who rides this bike will absolutely love it. Specialized knows how to make some great bikes!


    Name:
    Chilton15

    Helpful?

    Excellent Bike!

    I waited a long time to buy this bike as it was a major upgrade from the hardrock I had. It was a lot of money for me, but it took about 30 seconds to determine that it was worth every penny! I thought it was great at first, then I learned about air settings and suspension setup from the bike shop and really dialed it in. It just gets better and better! I adjusted the brake levers for a firmer feel, and added an x-fusion dropper post. It was a little strage to adjust to shorter cranks, but I quickly got used to it. The bike is smooth, quiet, and shifts excellent. If your on the fence, or looking to upgrade to your first full suspension like me, This bike s crazy good!


    Name:
    Dylan

    Helpful?

    I freaking love my Stumpy!

    I borrowed a friend's 2019 stumpy for a day and the next day I had to order mine. I can honestly say I am truly happy and satisfied.


    Name:
    Jc

    Helpful?

    LOVE my Stumpjumper!!!

    This is the fifth and hopefully last Specialized bike I'll buy. Rides like a dream. Upgrades include Shimano 2-pistons brakes and rotors and a 34-tooth front sprocket for more top-end. Once you ride a dual suspension bike you'll never wanna sit on anything else.


    Name:
    Big S.

    Helpful?