2020 Specialized Stumpjumper ST Alloy 27.5

C$2,799.95
Our Stumpjumper ST models are snappy and nimble, yet Incredibly versatile—the perfect rigs for riders seeking both efficiency and capability.
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Our Stumpjumper ST models are snappy and nimble, yet Incredibly versatile—the perfect rigs for riders seeking both efficiency and capability. The Stumpjumper ST Alloy 27.5 makes that winning combo affordable, with components that are big on performance and small on dollar signs.

THE ULTIMATE TRAIL BIKE

The innovative sidearm frame design makes a lighter, better-handling bike. By directly connecting all three mounting points of the rear-end and shock to the frame, we've increased both stiffness and performance over bumps. End result? Total control.

PERFECTLY-BALANCED SUSPENSION

Our in-house suspension-tuning team develops custom shock tunes, perfectly paired to each bike's kinematics. We call this Rx Tune and while it's not the easy way to build a suspension bike, it's worth it. You feel Rx Tune as a perfectly-balanced suspension.

SMART PARTS PICK

• 27.5 wheels accentuate the Stumpjumper ST's playful on-trail feel.

• 130-millimeters of suspension courtesy of a RockShox Recon RL fork.

• SX Eagle 12-speed drivetrain gives you single-ring simplicity and gearing to spare.

FEATURES

  • 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
  • FORK - RockShox Recon RL, Motion Control damper with low-speed compression to lockout, 46mm offset, rebound adjust, 15x110mm Boost™ Maxle® Lite thru-axle, 130mm of travel
  • REAR SHOCK - X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190x45mm
  • FRONT HUB - Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h
  • REAR HUB - Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h
  • SPOKES - Stainless, 14g
  • RIMS - Double-wall alloy, 27mm internal width
  • INNER TUBES - Presta, 40mm valve
  • FRONT TIRE - Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"
  • REAR TIRE - Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"
  • CRANKSET - SRAM SX Eagle, Powerspline, 170mm
  • CHAINRINGS - Steel, 32T
  • BOTTOM BRACKET - SRAM Powerspline
  • SHIFT LEVERS - SRAM SX Eagle, trigger, 12-speed
  • REAR DERAILLEUR - SRAM SX Eagle
  • CASSETTE - SRAM PG-1210 Eagle, 11-50t
  • CHAIN - SRAM SX Eagle, 12-speed
  • FRONT BRAKE - Tektro Gemini Comp, hydraulic disc, resin pad, 200mm
  • REAR BRAKE - Tektro Gemini Comp, hydraulic disc, resin pad, 180mm
  • HANDLEBARS - Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp
  • GRIPS - Specialized Sip Grip, half-waffle, slip-on
  • STEM - Specialized, 3D-forged alloy, 4-bolt, 7-degree rise
  • SADDLE - Body Geometry Myth:155 XS/S, Body Geometry Henge:143 M/L/XL, steel rails
  • SEATPOST - TransX dropper, 34.9mm, XS: 100mm, S: 125mm, ML/XL: 150mm Travel
  • SEAT BINDER - Specialized bolt-type, alloy, 38.6mm
  • PEDALS - Specialized Dirt
 

GEOMETRY

 
 
  XS S M L XL
CRANK LENGTH 170 170 170 170 170
STEM LENGTH 50 50 50 50 50
SEATPOST LENGTH 356 406 456 456 456
SADDLE WIDTH 155mm 143mm 143mm 143mm 143mm
HANDLEBAR WIDTH 780mm 780mm 780mm 780mm 780mm
REACH 405mm 415mm 435mm 455mm 480mm
TOP TUBE LENGTH* 544mm 570mm 595mm 627mm 660mm
STACK 581mm 592mm 596mm 623mm 637mm
WHEELBASE 1127mm 1157mm 1179mm 1212mm 1243mm
CHAINSTAY LENGTH 432mm 432mm 432mm 432mm 432mm
FRONT CENTER 696mm 726mm 748mm 780mm 812mm
BB DROP 28mm 21mm 21mm 21mm 21mm
BB HEIGHT 325mm 336mm 336mm 336mm 336mm
SEAT TUBE ANGLE 76.5° 75.3° 75° 74.6° 74.2°
HEAD TUBE ANGLE 66.5° 65.5° 65.5° 65.5° 65.5°
SEAT TUBE LENGTH 380mm 380mm 410mm 455mm 505mm
HEAD TUBE LENGTH 100mm 105mm 110mm 140mm 155mm
STANDOVER HEIGHT 742mm 752mm 757mm 769mm 770mm
FORK RAKE/OFFSET 46mm 46mm 46mm 46mm 46mm
FORK LENGTH, FULL 522mm 542mm 542mm 542mm 542mm
TRAIL 103mm 112mm 112mm 112mm 112mm