Specialized Stumpjumper ST Alloy 27.5 bike
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 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.
TECHNICAL SPECIFICATIONS
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
| REAR SHOCK | X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190x45mm |
| 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 |
COCKPIT
| STEM | Specialized, 3D-forged alloy, 4-bolt, 7-degree rise |
| HANDLEBARS | Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 31.8mm clamp, XS 720mm, S-XL 750mm, |
| GRIPS | Specialized Sip Grip, half-waffle, slip-on |
| 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 |
BRAKES
| FRONT BRAKE | Tektro Gemini Comp, hydraulic disc, resin pad, 200mm |
| REAR BRAKE | Tektro Gemini Comp, hydraulic disc, resin pad, 180mm |
DRIVETRAIN
| REAR DERAILLEUR | SRAM SX Eagle, 12-speed |
| SHIFT LEVERS | SRAM SX Eagle, trigger, 12-speed |
| CASSETTE | SRAM PG-1210 Eagle, 11-50t |
| CHAIN | SRAM SX Eagle, 12-speed |
| CRANKSET | SRAM SX Eagle, Powerspline, 170mm |
| CHAINRINGS | Steel, 32T |
| BOTTOM BRACKET | SRAM Powerspline |
WHEELS
| RIMS | Double-wall alloy, 27mm internal width |
| FRONT HUB | Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h |
| REAR HUB | Specialized, sealed cartridge bearings, 12x148mm thru-axle, 32h |
| SPOKES | Stainless, 14g |
| 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″ |
| INNER TUBES | Presta, 40mm valve |
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