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The Stumpjumper Alloy LTD brings all-new suspension kinematics and progressive geometry…
We deliver! Just say when and how.
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).
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
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
Front Brake
SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm
Rear Brake
SRAM Code RS, 4-piston caliper, hydraulic disc, 200mm
Shift Levers
SRAM X01 Eagle, trigger, 12-speed
Rear Derailleur
SRAM GX Eagle, 12-speed
Cassette
SRAM XG-1295 Eagle, 10-52t
Chain
SRAM GX Eagle, 12-speed
Crankset
SRAM GX Eagle, DUB, S2-S5: 170mm, S6: 175mm
Chainrings
32T
Bottom Bracket
SRAM DUB, BSA 73mm, Threaded
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
Stem
Alloy Trail Stem, 35mm bar bore
Handlebars
Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 30mm rise, 780mm width
Grips
Deity Lockjaw, Black
Saddle
Bridge Comp, Hollow Cr-mo rails, 155/143mm
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
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.
S2 | S3 | S4 | S5 | S6 | |
---|---|---|---|---|---|
Crank Length | 170mm | 170mm | 170mm | 170mm | 175mm |
Handlebar Width | 780mm | 800mm | 800mm | 800mm | 800mm |
Stem Length | 40mm | 40mm | 40mm | 50mm | 50mm |
Saddle Width | 155mm | 143mm | 143mm | 143mm | 143mm |
Seatpost Length | 125mm | 150mm | 170mm | 170mm | 190mm |
Reach (Low BB) | 430mm | 450mm | 475mm | 500mm | 530mm |
Headtube Angle (High BB) | 65.5° | 65.5° | 65.5° | 65.5° | 65.5° |
Max Seatpost Insertion | 190mm | 210mm | 230mm | 250mm | 270mm |
Wheelbase (Low BB) | 1188mm | 1212mm | 1241mm | 1280mm | 1315mm |
Top-tube Length (horizontal) | 563mm | 586mm | 615mm | 643mm | 676mm |
Reach (High BB) | 435mm | 455mm | 480mm | 505mm | 535mm |
Fork Rake/Offset | 44mm | 44mm | 44mm | 44mm | 44mm |
Seat Tube Angle (Low BB) | 77.7° | 77.5° | 77.2° | 77° | 76.9° |
Front Center | 746mm | 770mm | 799mm | 828mm | 863mm |
Seat Tube Angle (High BB) | 78.2° | 77.9° | 77.7° | 77.5° | 77.3° |
Bike Standover Height | 742mm | 750mm | 753mm | 777mm | 784mm |
BB Height (Low BB) | 332mm | 332mm | 332mm | 332mm | 332mm |
BB Drop (Low BB) | 42mm | 42mm | 42mm | 42mm | 42mm |
Fork Length (full) | 550mm | 550mm | 550mm | 550mm | 550mm |
Seat Tube Length | 385mm | 405mm | 425mm | 445mm | 465mm |
Wheelbase (High BB) | 1184mm | 1208mm | 1237mm | 1276mm | 1311mm |
Min Seatpost Insertion | 100mm | 100mm | 100mm | 100mm | 100mm |
Chainstay Length (Low BB) | 444mm | 444mm | 444mm | 454mm | 454mm |
Chainstay Length (High BB) | 440mm | 440mm | 440mm | 450mm | 450mm |
Stack (Low BB) | 613mm | 623mm | 631mm | 639mm | 649mm |
Stack (High BB) | 618mm | 627mm | 640mm | 609mm | 644mm |
Headtube Angle (Low BB) | 65° | 65° | 65° | 65° | 65° |
Headtube Length | 100mm | 110mm | 120mm | 130mm | 140mm |
BB Height (High BB) | 339mm | 339mm | 339mm | 339mm | 339mm |
BB Drop (High BB) | 35mm | 35mm | 35mm | 35mm | 35mm |
Trail (Low BB) | 126mm | 126mm | 126mm | 126mm | 126mm |
Trail (High BB) | 122mm | 122mm | 122mm | 122mm | 122mm |
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