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.
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 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.
•Bottom Bracket: SRAM Powerspline
•Cassette: SRAM PG-1210 Eagle, 11-50t
•Chain: SRAM SX Eagle, 12-speed
•Chainrings: Steel, 32T
•Crankset: SRAM SX Eagle, Powerspline, 170mm
•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
•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
•Front Brake: Tektro Gemini Comp, hydraulic disc, resin pad, 200mm
•Front Hub: Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h
•Front Tire: Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"
•Grips: Specialized Sip Grip, half-waffle, slip-on
•Handlebars: Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm,
•Inner Tubes: Presta, 40mm valve
•Pedals: Specialized Dirt
•Rear Brake: Tektro Gemini Comp, hydraulic disc, resin pad, 180mm
•Rear Derailleur: SRAM SX Eagle, 12-speed
•Rear Hub: Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h
•Rear Shock: X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190x45mm
•Rear Tire: Purgatory, GRID casing, GRIPTON® compound, 2Bliss Ready, 27.5 x 2.3"
•Rims: Double-wall alloy, 27mm internal width
•Saddle: Body Geometry Myth:155 XS/S, Body Geometry Henge:143 M/L/XL, steel rails
•Seat Binder: Specialized bolt-type, alloy, 38.6mm
•Seatpost: TransX dropper, 34.9mm, XS: 100mm, S: 125mm, ML/XL: 150mm Travel
•Shift Levers: SRAM SX Eagle, trigger, 12-speed
•Spokes: Stainless, 14g
•Stem: Specialized, 3D-forged alloy, 4-bolt, 7-degree rise