Stumpjumper Alloy
4.5
12 Reviews
The Stumpjumper Alloy brings all-new suspension kinematics and progressive geometry…
We deliver! Just say when and how.
Product Details
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
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
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
Brakes
Front Brake
Tektro Gemini Comp, hydraulic disc, resin pad, 200mm
Rear Brake
Tektro Gemini Comp, hydraulic disc, resin pad, 180mm
Drivetrain
Shift Levers
SRAM SX Eagle, trigger, 12-speed
Rear Derailleur
SRAM SX Eagle, 12-speed
Cassette
SRAM PG-1210 Eagle, 11-50t
Chain
SRAM SX Eagle, 12-speed
Crankset
SRAM SX Eagle, S1:165mm, S2-S5: 170mm, S6: 175mm
Chainrings
30T
Bottom Bracket
SRAM Powerspline
Wheels & Tires
Rims
Double-wall alloy, 27mm internal width, 28h
Front Hub
Specialized alloy front hub disc, sealed cardridge bearings, 6-bolt, 15x110mm thru-axle, 28h
Rear Hub
Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h
Spokes
Stainless, 14g
Front Tire
Butcher, GRID casing, GRIPTON® T7 compound, 29x2.3"
Rear Tire
Purgatory, GRID casing, GRIPTON® T7 compound, 29x2.3"
Inner Tubes
Standard, Presta Valve
Cockpit
Stem
Alloy Trail Stem, 35mm bar bore
Handlebars
Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 30mm rise, 780mm width
Grips
Specialized Trail Grips
Saddle
Body Geometry Bridge Saddle, steel rails
SeatPost
TranzX dropper, 34.9mm, S1: 100mm, S2: 125mm, S3: 150mm. S4-S5: 170mm, S6- 200mm
Weight
Weight
15.93kg (35 lb, 1.9 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
| S1 | S2 | S3 | S4 | S5 | S6 | |
|---|---|---|---|---|---|---|
| Crank Length | 165mm | 170mm | 170mm | 170mm | 170mm | 175mm |
| Handlebar Width | 780mm | 780mm | 780mm | 780mm | 780mm | 780mm |
| Stem Length | 40mm | 40mm | 40mm | 40mm | 50mm | 50mm |
| Saddle Width | 155mm | 155mm | 143mm | 143mm | 143mm | 143mm |
| Seatpost Length | 100mm | 125mm | 150mm | 170mm | 170mm | 200mm |
| Max Seatpost Insertion | 190mm | 190mm | 210mm | 230mm | 250mm | 270mm |
| Stack (Low BB) | 618mm | 613mm | 623mm | 631mm | 639mm | 649mm |
| Min Seatpost Insertion | 100mm | 100mm | 100mm | 100mm | 100mm | 100mm |
| Stack (High BB) | 614mm | 609mm | 618mm | 627mm | 640mm | 644mm |
| Reach (Low BB) | 410mm | 430mm | 450mm | 475mm | 500mm | 530mm |
| Reach (High BB) | 416mm | 435mm | 455mm | 480mm | 505mm | 535mm |
| Headtube Length | 100mm | 110mm | 120mm | 130mm | 140mm | 100mm |
| Headtube Angle (Low BB) | 65° | 65° | 65° | 65° | 65° | 65° |
| Headtube Angle (High BB) | 65.5° | 65.5° | 65.5° | 65.5° | 65.5° | 65.5° |
| BB Height (Low BB) | 327mm | 332mm | 332mm | 332mm | 332mm | 332mm |
| BB Height (High BB) | 339mm | 339mm | 339mm | 339mm | 334mm | 339mm |
| BB Drop (Low BB) | 47mm | 42mm | 42mm | 42mm | 42mm | 42mm |
| BB Drop (High BB) | 40mm | 35mm | 35mm | 35mm | 35mm | 35mm |
| Trail (Low BB) | 126mm | 126mm | 126mm | 126mm | 126mm | 126mm |
| Trail (High BB) | 122mm | 122mm | 122mm | 122mm | 122mm | 122mm |
| Fork Length (full) | 550mm | 550mm | 550mm | 550mm | 550mm | 550mm |
| Fork Rake/Offset | 44mm | 44mm | 44mm | 44mm | 44mm | 44mm |
| Front Center | 726mm | 746mm | 770mm | 799mm | 828mm | 863mm |
| Chainstay Length (Low BB) | 454mm | 454mm | 444mm | 444mm | 444mm | 444mm |
| Chainstay Length (High BB) | 440mm | 440mm | 440mm | 440mm | 450mm | 450mm |
| Wheelbase (Low BB) | 1168mm | 1188mm | 1212mm | 1241mm | 1280mm | 1315mm |
| Wheelbase (High BB) | 1164mm | 1184mm | 1208mm | 1237mm | 1276mm | 1311mm |
| Top-tube Length (horizontal) | 676mm | 545mm | 563mm | 586mm | 615mm | 643mm |
| Bike Standover Height | 742mm | 742mm | 750mm | 753mm | 777mm | 784mm |
| Seat Tube Length | 385mm | 385mm | 405mm | 425mm | 445mm | 465mm |
| Seat Tube Angle (Low BB) | 77.7° | 77.7° | 77.5° | 77.2° | 77° | 76.9° |
| Seat Tube Angle (High BB) | 78.2° | 78.2° | 77.9° | 77.7° | 77.5° | 77.3° |
Manual Downloads
Rider Reviews
4.5
12 Reviews