Men's Stumpjumper Comp Alloy 27.5
$3,000.00
Part No.  

Men's Stumpjumper Comp Alloy 27.5

$3,000.00
Part No.  154963
load-spinner
Men's Stumpjumper Comp Alloy 27.5
Overview
Technical Specifications
Geometry
Reviews

No need to fret—we haven’t forgotten about all you alloy fans out there. In fact, the new Stumpjumper Comp Alloy 27.5 may be the most radically designed alloy bike ever made. For real, though. And with new tube shapes, an asymmetrical design, and the nimble 27.5 handling that we all love, it's plenty capable and ready to take on the trail.

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 3.0' 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 a Shimano SLX drivetrain with RaceFace cranks, Shimano SLX disc brakes, FOX front and rear suspension, and Roval Traverse 27.5 alloy wheels.

  • The completely redesigned alloy Stumpjumper frame features an M5 alloy front- and rear-end, an asymmetrical design, and our 27.5 Trail Geometry, so it's just the right amount of both capable and comfortable.
  • The FOX DPS Performance rear shock features our Rx Trail Tune, ensuring that no matter the wheel or frame size, your bike is dialed-in perfectly.
  • A FOX 34 Rhythm fork handles suspension duties up front, with stiff stanchions and plenty of adjustability.

Technical Specifications

DRIVETRAIN
CHAIN KMC X11, 11-speed w/ Missing Link™
BOTTOM BRACKET Threaded BB, 24mm spindle
CRANKSET RaceFace Aeffect, 24mm spindle, 170mm crankarm
SHIFT LEVERS Shimano SLX, 11-speed
CASSETTE Shimano SLX, 11-speed, 11-46t
CHAINRINGS 32T
REAR DERAILLEUR Shimano XT, Shadow Plus, GS cage, 11-speed
SUSPENSION
FORK FOX FLOAT Rhythm 34 27.5, 44mm offset, 2-position, tapered alloy steerer, 15x110mm Boost™, 150mm of travel
REAR SHOCK FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 210x52.5mm
WHEELS
FRONT HUB Specialized, sealed cartridge bearings, 15x110mm spacing, 28h
REAR HUB Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
INNER TUBES Presta, 40mm valve
SPOKES DT Swiss Industry
RIMS Roval Traverse 27.5, hookless alloy, 29mm inner width, tubeless ready, 28h
FRONT TIRE Butcher, GRID Casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6"
REAR TIRE Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.6"
COCKPIT
SADDLE Body Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm
SEATPOST X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SRL LE lever, 34.9mm, S: 125mm, M/L/XL: 150mm of travel
STEM Specialized Trail, 3D forged alloy, 4-bolt, 6-degree rise
HANDLEBARS Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 780mm width
GRIPS Specialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness
BRAKES
FRONT BRAKE Shimano SLX, hydraulic disc, resin pads, 200mm rotor
REAR BRAKE Shimano SLX, Hydraulic Disc, Resin Pad
ACCESSORIES
PEDALS Specialized Dirt
FRAMESET
SEAT BINDER Specialized bolt-type, alloy, 38.6mm
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, 150mm of travel

Geometry

Geometry Chart

Stumpjumper - Geometry

S M L XL
  S M L XL
Crank Length 170MM 170MM 170MM 170MM
Stem Length 45MM 45MM 45MM 45MM
Seatpost Length 376mm 438mm 438mm 438mm
Saddle Width 143mm 143mm 143mm 143mm
Handlebar Width 780mm 780mm 780mm 780mm
Reach 415mm 435mm 455mm 480mm
Top Tube Length, Horizontal 570mm 595mm 627mm 660mm
Stack 592mm 596mm 623mm 637mm
Wheelbase 1157mm 1179mm 1212mm 1243mm
Chainstay Length 432mm 432mm 432mm 432mm
Front Center 726mm 748mm 780mm 812mm
BB Drop 21mm 21mm 21mm 21mm
BB Height 336mm 336mm 336mm 336mm
Seat Tube Angle 75.3° 75° 74.6° 74.2°
Head Tube Angle 65.5° 65.5° 65.5° 65.5°
Seat Tube Length 380mm 410mm 455mm 505mm
Head Tube Length 105mm 110mm 140mm 155mm
Bike Standover Height 752mm 757mm 769mm 770mm
Fork Rake/Offset 46mm 46mm 46mm 46mm
Fork Length, Full 542mm 542mm 542mm 542mm
Trail 112mm 112mm 112mm 112mm

Reviews