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Specialized Stumpjumper Alloy

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The Stumpjumper Alloy brings all-new suspension kinematics and progressive geometry into a full-alloy package that's both lightweight and extremely durable. Outfitted with a no-fuss SRAM SX 12-speed groupset, the Stumpjumper Alloy is your all-access pass for trail adventure.

  • THE TRAIL BENCHMARK — When we set out to design the all-new Stumpjumper, we pursued some hefty goals. It had to excel on any kind of trail, for every style of rider. To achieve that, we went after serious weight reduction without sacrificing durability, a stiff, responsive chassis that still rides light and lively, geometry that improves everyone’s riding, and the best suspension kinematics we know how to design. Turns out, you can have your cake and eat it too with the new Stumpjumper.
  • THE SWEETEST 130MM OF TRAVEL YOU’LL EVER RIDE — We massaged the kinematics of the Stumpjumper suspension to bring out the very best all-round performance possible in a 130mm package. Countless hours of suspension lab development and field testing created a refined mid-travel ripper that eats big terrain like a gravity fed beast, handles like a dream everywhere, and climbs like it has a motor.
  • PROGRESSIVE GEOMETRY — The S-Sizing geometry of the new Stumpjumper hits the progressive sweet spot. It’s long, low and slack, with a short offset fork and a steeper seat tube angle. These numbers combine to make your ride more stable, more carvealicious, more comfortable climbing, more better everywhere. With FlipChip adjustability you’re able to further fine-tune your fit, ensuring that your new Stumpjumper performs flawlessly on whatever terrain you choose.
  • RIDER-FIRST ENGINEERED™ — Rider-First Engineered™ frames use a size-specific approach to ride characteristics that ensures benchmark handling and flawless performance, regardless of frame or rider size. Whether you’re a jump-happy grom riding an S1, or a DH-fiend giant in need of the lengthy S6, you’ll experience the same ride traits – rail-sharp cornering and balanced front and rear stiffness – at the lightest-possible weight, And by light, we mean real light: 2,250 grams (S-Works, S-3 size, with rear shock).



Technical Specifications

FRAME Alloy chassis and rear-end, asymmetrical design, 29 Trail Geometry, horst pivot BB adjustment, threaded BB, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel SEAT BINDER Alloy, 38.6
SEAT BINDER Alloy, 38.6
REAR SHOCK X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout S1:190x42.5mm, S2-S6: 190x45mm
FORK RockShox 35 Silver, Solo Air, 44mm offset, rebound adjust, TurnKey lockout, 15x110mm Boost™ Maxle® Lite thru-axle, 140mm of travel
STEM Alloy Trail Stem, 35mm bar bore
HANDLEBARS Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 30mm rise, 800mm width
SADDLE Body Geometry Bridge Saddle, steel rails
SEATPOST TranzX dropper, 34.9mm, XS-S: 100mm, M: 120mm, L/XL: 150mm Travel
TAPE Specialized Trail Grips
FRONT BRAKE Tektro Gemini Comp, hydraulic disc, resin pad, 200mm
REAR BRAKE Tektro Gemini Comp, hydraulic disc, resin pad, 180mm
SHIFT LEVERS SRAM SX Eagle, trigger, 12-speed
CHAIN SRAM SX Eagle, 12-speed
CRANKSET SRAM SX Eagle, DUB, S1:165mm, S2-S5: 170mm, S6: 175mm
RIMS 700c disc, double-wall alloy, sleeved, 32h
FRONT HUB Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h
REAR HUB Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h
FRONT TIRE Butcher, GRID casing, GRIPTON® compound, 29x2.3"
REAR TIRE Purgatory, GRID Casing, GRIPTON® compound, 29x2.3"
INNER TUBES Standard, Presta valve
SPOKES Stainless, 14g


  S1 S2 S3 S4 S5 S6
Crank Length 165mm 170mm 170mm 170mm 170mm 175mm
STEM LENGTH 40mm 40mm 50mm 50mm 50mm 50mm
HANDLEBAR WIDTH 780mm 780mm 780mm 780mm 780mm 780mm
FRONT CENTRE 726mm 746mm 770mm 799mm 828mm 863mm
STACK (LOW BB) 618mm 613mm 623mm 631mm 639mm 649mm
CHAINSTAY LENGTH (LOW BB) 444mm 444mm 444mm 444mm 454mm 454mm
SEAT TUBE LENGTH 385mm 385mm 405mm 425mm 445mm 465mm
BIKE STANDOVER HEIGHT 742mm 742mm 750mm 753mm 777mm 784mm
HEADTUBE LENGTH 100mm 100mm 110mm 120mm 130mm 140mm
HEADTUBE ANGLE (LOW BB) 65 65 65 65 65 65
MIN SEATPOST INSERTION 100mm 100mm 100mm 100mm 100mm 100mm
MAX SEATPOST INSERTION 190mm 190mm 210mm 230mm 250mm 270mm
HEADTUBE ANGLE (HIGH BB) 65.5 65.5 65.5 65.5 65.5 65.5
SEATPOST LENGTH 100mm 125mm 150mm 170mm 170mm 200mm
SADDLE WIDTH 155mm 155mm 143mm 143mm 143mm 143mm
WHEELBASE (LOW BB) 1168mm 1188mm 1212mm 1241mm 1280mm 1315mm
WHEELBASE (HIGH BB) 1164mm 1184mm 1208mm 1237mm 1276mm 1311mm
TRAIL (LOW BB) 126mm 126mm 126mm 126mm 126mm 126mm
TRAIL (HIGH BB) 122mm 122mm 122mm 122mm 122mm 122mm
BB DROP (HIGH BB) 47mm 42mm 42mm 42mm 42mm 42mm
STACK (HIGH BB) 614mm 609mm 618mm 627mm 640mm 644mm
CHAINSTAY LENGTH (HIGH BB) 440mm 440mm 440mm 440mm 450mm 450mm
BB HEIGHT (LOW BB) 327mm 332mm 332mm 332mm 332mm 332mm
FORK RAKE/OFFSET 44mm 44mm 44mm 44mm 44mm 44mm
SEAT TUBE ANGLE (HIGH BB) 78.2 78.2 77.9 77.7 77.5 77.3
REACH (LOW BB) 410mm 430mm 450mm 475mm 500mm 530mm
SEAT TUBE ANGLE (LOW BB) 77.7 77.7 77.5 77.2 77 76.9
FORK LENGTH (FULL) 550mm 550mm 550mm 550mm 550mm 550mm
REACH (HIGH BB) 416mm 435mm 455mm 480mm 505mm 535mm


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