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    Men's Stumpjumper ST 27.5

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    2019 Men's Stumpjumper ST 27.5

    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 27.5 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 2.8" 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 130mm of travel, and wide alloy wheels.

    Technical Specifications

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    WHEELS

    Rims

    700C disc, double-wall alloy, pinned, 32h

    Front Tire

    Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"

    Inner Tubes

    Presta, 40mm valve

    Rear Tire

    Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"

    Rear Hub

    Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h

    Front Hub

    Specialized, sealed cartridge bearings, 15x110mm thru-axle, 28h

    COCKPIT

    Saddle

    Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm

    SeatPost

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

    Grips

    Specialized Sip Grip, half-waffle, slip-on

    Handlebars

    Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, S 720mm, M-XL 750mm

    Stem

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

    DRIVETRAIN

    Chain

    KMC X11, 11-speed w/ Missing Link™

    Crankset

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

    Bottom Bracket

    SRAM Powerspline

    Shift Levers

    Shimano SLX, 11-speed

    Rear Derailleur

    Shimano SLX, Shadow Plus, 11-speed

    Chainrings

    Steel, 30T

    Cassette

    SunRace, 11-speed, 11-46t

    FRAMESET

    Frame

    M5 alloy chassis and rear end, asymmetrical design, 27.5 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel

    Seat Binder

    Specialized bolt-type, alloy, 38.6mm

    Suspension

    Fork

    RockShox Recon RL, Solo Air, 42mm 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, 190x45mm

    ACCESSORIES

    Pedals

    Specialized Body Geometry Fitness, platform, plastic

    WHEELS & TIRES

    Spokes

    Stainless, 14g

    BRAKES

    Rear Brake

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

    Front Brake

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

    * 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

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    SMLXL
    Crank Length170mm170mm170mm170mm
    Handlebar Width780mm780mm780mm780mm
    Stem Length50mm50mm50mm50mm
    Saddle Width143mm143mm143mm143mm
    Seatpost Length375mm375mm435mm435mm
    Stack586mm590mm618mm631mm
    Reach425mm444mm465mm490mm
    Head Tube Length105mm110mm140mm155mm
    Head Tube Angle66.5°66.5°66.5°66.5°
    BB Height325mm325mm325mm325mm
    BB Drop28mm28mm28mm28mm
    Trail103mm103mm103mm103mm
    Fork Length, Full522mm522mm522mm522mm
    Fork Rake/Offset46mm46mm46mm46mm
    Front Center718mm739mm772mm803mm
    Chainstay Length432mm432mm432mm432mm
    Wheelbase1149mm1170mm1203mm1234mm
    Top Tube Length, Horizontal568mm591mm624mm657mm
    Bike Standover Height744mm749mm761mm762mm
    Seat Tube Length380mm410mm455mm505mm
    Seat Tube Angle76.3°76°75.6°75.2°
    Geometry

    Rider Reviews

    • 4.4
    • 7 Reviews

    Yes Please

    This bike is great!!! Had it for a couple of months now and really starting to rip into the sport. I would recommend this. A dropper in future would be a nice upgrade, but all-round, at least a 9.9/10


    Name:
    Gav

    Helpful?

    take a second look on it

    one if your are getting into the sport it is a great bike for that but if you a kid and you grow like a weed and it does not even have a dropper and when you do get a dropper you can only put a 75mm and maybe 100mm dropper but no logger and so every time if you about to hit some thing fun like how mountain bikes are suppose to be and you don't want to have fun get this bike but if you do want to have fun save your moneys and securely look into a better bike. specialized really come on please do better.


    Name:
    Hayden

    Helpful?

    Solid bike at a solid price.

    I recently upgraded to this Stumpjumper from my Pitch Sport hardtail. Let me tell you, it is a world of difference. I've been riding bikes for 24 years, but this is by far the smoothest and most flowy one yet. This bike gives you confidence in all the tight and fast downhills and the help you need to get up those steep climbs. I love the bike for the price. Next steps are upgrading suspension and buying a dropper seat post!


    Name:
    Slambert

    Helpful?

    Way above it's value 10/10

    I've been an avid mountain biker since around ,10 now I'm 18 and I've ridden everything from full out downhill bikes to XC race bikes and I gotta say this is by far the best bike I've ridden I'm 6'3 but I opted for a large instead of an XL and I still fit pretty good I've had it since early August and have put a couple hundred miles on it already and I've kept up with riders on bikes much more expensive and even managed to ride it at a downhill park with no issue. I 100 percent recommend this bike to anyone who wants a trail bike and am likely to write another review as I'm taking it out west this summer.


    Name:
    Dan G.

    Helpful?

    So happy with this bike.

    I finally decided to upgrade from my 15 year old Giant NXT full sespension. What a difference! I had no idea how nice a bike could ride. It felt like a lot of money, but now that I've ridden it so many times and every experience is wonderful, I couldn't be happier with my purchase. The geometry of bikes has changed so much in the last decade.


    Name:
    Nor B.

    Helpful?

    Fun fun bike

    After riding several full suspension bikes I finally decided to buy one for myself. The base Stumpy model had everything I needed, a great deal for the money. I've wanted a Stumpjumper since the mid 90's and here was my chance. And it has filled every expectation. The bike goes where you want it to go, climbs like a champ even when the suspension isn't locked out, and balances like a dream. I've never felt so comfortable on a bike.


    Name:
    Brian O.

    Helpful?