Specialized
Stumpjumper 15 Alloy
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Geometry
Geometry
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Geometry
Geometry
Frame geometry
| Geometry | S1 | S2 | S3 | S4 | S5 | S6 |
|---|---|---|---|---|---|---|
| Stack | 608mm | 618mm | 627mm | 640mm | 654mm | 667mm |
| Reach | 400mm | 425mm | 450mm | 475mm | 500mm | 530mm |
| Headtube length | 95mm | 100mm | 110mm | 125mm | 140mm | 155mm |
| Headtube angle | 64.5deg | 64.5deg | 64.5deg | 64.5deg | 64.5deg | 64.5deg |
| BB height | 334mm | 337mm | 337mm | 337mm | 337mm | 337mm |
| BB drop | 41mm | 38mm | 38mm | 38mm | 38mm | 38mm |
| Trail | 129mm | 130mm | 130mm | 130mm | 130mm | 130mm |
| Fork length | 551mm | 561mm | 561mm | 561mm | 561mm | 561mm |
| Fork offset | 44mm | 44mm | 44mm | 44mm | 44mm | 44mm |
| Front center | 720mm | 751mm | 780mm | 812mm | 843mm | 879mm |
| Chainstay length | 430mm | 432mm | 435mm | 435mm | 445mm | 445mm |
| Wheelbase | 1149mm | 1181mm | 1213mm | 1244mm | 1285mm | 1322mm |
| Top tube | 541mm | 573mm | 595mm | 624mm | 647mm | 677mm |
| Standover height | 738mm | 751mm | 745mm | 745mm | 745mm | 751mm |
| Seat tube length | 385mm | 385mm | 405mm | 425mm | 445mm | 465mm |
| Seat tube angle | 78deg | 77deg | 77deg | 76.5deg | 76.5deg | 76.5deg |
Spec geometry
| Geometry | S1 | S2 | S3 | S4 | S5 | S6 |
|---|---|---|---|---|---|---|
| Crank length | 165mm | 165mm | 165mm | 170mm | 170mm | 170mm |
| Stem length | 40mm | 40mm | 40mm | 40mm | 40mm | 40mm |
| Handlebar width | 780mm | 780mm | 800mm | 800mm | 800mm | 800mm |
| Handlebar reach | — | — | — | — | — | — |
| Handlebar drop | — | — | — | — | — | — |
| Saddle width | 155mm | 155mm | 143mm | 143mm | 143mm | 143mm |
| Dropper post travel | 125mm | 150mm | 170mm | 200mm | 200mm | 200mm |
| Seatpost offset | — | — | — | — | — | — |
Specs
Full specs
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Specs
Full specs
Frame
Frame
Specialized M5 Alloy chassis and rear-end, Trail Geometry, SWAT™ Door integration, head tube angle adjustment, threaded BB, internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, SRAM UDH compatible, 145mm travel
Suspension
Rear shock
X-Fusion 02 Pro RL, Ride Dynamics Trail Tune, rebound adjust, lockout (S1: 210x52.5mm; S2–S6: 210x55mm)
Fork
RockShox Psylo Silver, Motion Control Damper, 15x110mm axle, 44mm offset (S1: 140mm travel; S2–S6: 150mm travel)
Brakes
Front brake
Shimano BR-MT420, 4-piston hydraulic disc
Rear brake
Shimano BR-MT420, 4-piston hydraulic disc
Front rotor
203mm
Rear rotor
S1–S2: 180mm; S3–S6: 203mm
Drivetrain
Shift levers
Shimano Deore M6100, 12-speed
Rear derailleur
Shimano Deore M6100, 12-speed, Shadow Plus
Cassette
Shimano Deore M6100, 12-speed w/ Hyperglide+, 10-51T
Chain
Shimano Deore M6100, 12-speed
Crankset
Shimano Deore M6120, 30T ring, 55mm chainline (S1–S3: 165mm; S4–S6: 170mm)
Bottom bracket
BSA, 73mm, threaded
Cockpit
Stem
Alloy Trail Stem, 35mm bar bore
Handlebars
Specialized 6000-series alloy, 6° upsweep, 8° backsweep (S1–S2: 780mm width, 20mm rise; S3–S4: 800mm width, 30mm rise; S5–S6: 800mm width, 40mm rise)
Grips
Specialized Trail Grips
Saddle
Bridge, steel rails (S1–S2: 155mm; S3–S6: 143mm)
Seatpost
TranzX dropper, remote SLR LE lever, 34.9mm (S1: 125mm; S2: 150mm; S3: 170mm; S4–S6: 200mm)
Wheels & Tires
Front wheel
Specialized Alloy, Tubeless Ready, 29mm internal width, 28h (Front: 29"); Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h; Stainless, 14g
Rear wheel
Specialized Alloy, Tubeless Ready, 29mm internal width, 28h (Rear: S1–S2: 27.5"; S3–S6: 29"); Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h; Stainless, 14g
Front tire
Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3"
Rear tire
Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, 2Bliss Ready (S1–S2: 27.5x2.3"; S3–S6: 29x2.3")
Weight
Weight
16.57 kg (36 lb, 8.5 oz) (size S4)