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 weve 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 bikes kinematics. We call this Rx Tune and while its not the easy way to build a suspension bike its worth it. You feel Rx Tune as perfectly-balanced suspension.
SMART PARTS PICK
• 27.5 wheels accentuate the Stumpjumper STs 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.
- The M5 alloy frame asymmetrical “sidearm” design and our 27.5 Geometry make this Stumpjumper both nimble and capable.
- 130-millimeters of plush and controlled suspension (including a lock-out) come courtesy of a RockShox Recon RL fork.
- SX Eagle 12-speed drivetrain gives you single-ring simplicity and all the gearing you need to summit the biggest climbs.
- 27.5 wheels accentuate the Stumpjumper ST’s playful on-trail feel.
- The TranzX seatpost lets you drop your saddle on descents increasing your maneuverability and control when the trail gets dicey.
SPECS & GEOS
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
RIMS
Double-wall alloy, 27mm internal width
INNER TUBES
Presta, 40mm valve
FRONT TYRE
Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3
REAR TYRE
Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3
CRANKSET
SRAM SX Eagle, Powerspline, 170mm
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
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