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Stumpjumper Alloy LTD

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The Stumpjumper Alloy LTD brings all-new suspension kinematics and progressive geometry…

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Product Details

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The Stumpjumper Alloy LTD 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 GX 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).

  • 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

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Frameset

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, 38.6mm

Suspension

Rear Shock

FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 190x45mm

Fork

FOX FLOAT 36 Rhythm, GRIP damper, two position Sweep adjustment, 15x110mm QR axle, 44mm offset, 150mm of travel

Cockpit

SeatPost

X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SLR LE lever, 34.9, S2: 125mm, S3: 150mm, S4/S5: 175mm, S6: 190mm

Stem

Alloy Trail Stem, 35mm bar bore

Saddle

Bridge Comp, Hollow Cr-mo rails, 155/143mm

Handlebars

Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 30mm rise, 780mm width

Grips

Deity Lockjaw, Black

Brakes

Front Brake

SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm

Rear Brake

SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm

Drivetrain

Rear Derailleur

SRAM GX Eagle, 12-speed

Shift Levers

SRAM X01 Eagle, trigger, 12-speed

Chain

SRAM GX Eagle, 12-speed

Cassette

SRAM XG-1295 Eagle, 10-52t

Crankset

SRAM GX Eagle, DUB, S2-S5: 170mm, S6: 175mm

Chainrings

32T

Bottom Bracket

SRAM DUB, BSA 73mm, Threaded

Wheels & Tires

Rims

Roval Traverse 29 Alloy, 30mm inner width, hand-built, 2Bliss Ready

Front Hub

Roval, sealed cartridge bearings, 15x110mm spacing, 28h

Rear Hub

Roval DT Swiss 370, Ratchet LN, SRAM XD driver body, 12mm thru-axle, 148mm spacing, 28h

Spokes

DT Swiss Competition Race

Front Tire

Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3"

Rear Tire

Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, 29x2.3"

Inner Tubes

Standard, Presta

Weight

Weight

14.65kg (32 lb, 4.8 oz)

Weight Size

S4

* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.

Geometry

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S2S3S4S5S6
Crank Length170mm170mm170mm170mm175mm
Handlebar Width780mm800mm800mm800mm800mm
Stem Length40mm40mm40mm50mm50mm
Saddle Width155mm143mm143mm143mm143mm
Seatpost Length125mm150mm170mm170mm190mm
Reach (Low BB)430mm450mm475mm500mm530mm
Headtube Angle (High BB)65.5°65.5°65.5°65.5°65.5°
Max Seatpost Insertion190mm210mm230mm250mm270mm
Wheelbase (Low BB)1188mm1212mm1241mm1280mm1315mm
Top-tube Length (horizontal)563mm586mm615mm643mm676mm
Reach (High BB)435mm455mm480mm505mm535mm
Fork Rake/Offset44mm44mm44mm44mm44mm
Seat Tube Angle (Low BB)77.7°77.5°77.2°77°76.9°
Front Center746mm770mm799mm828mm863mm
Seat Tube Angle (High BB)78.2°77.9°77.7°77.5°77.3°
Bike Standover Height742mm750mm753mm777mm784mm
BB Height (Low BB)332mm332mm332mm332mm332mm
BB Drop (Low BB)42mm42mm42mm42mm42mm
Fork Length (full)550mm550mm550mm550mm550mm
Seat Tube Length385mm405mm425mm445mm465mm
Wheelbase (High BB)1184mm1208mm1237mm1276mm1311mm
Min Seatpost Insertion100mm100mm100mm100mm100mm
Chainstay Length (Low BB)444mm444mm444mm454mm454mm
Chainstay Length (High BB)440mm440mm440mm450mm450mm
Stack (Low BB)613mm623mm631mm639mm649mm
Stack (High BB)618mm627mm640mm609mm644mm
Headtube Angle (Low BB)65°65°65°65°65°
Headtube Length100mm110mm120mm130mm140mm
BB Height (High BB)339mm339mm339mm339mm339mm
BB Drop (High BB)35mm35mm35mm35mm35mm
Trail (Low BB)126mm126mm126mm126mm126mm
Trail (High BB)122mm122mm122mm122mm122mm
Geometry

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