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Stumpjumper 15 Expert

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Stumpjumper 15 Expert

Stumpjumper 15 is here to obliterate every trade-off in the trail game. Devour bumps like a big bike? Check. Short-travel control, playfulness, and efficiency? Double check. How about a heaping helping of personalization to make it perfect for the only rider who really matters—you?  Check, check, check.

BREAKTHROUGH CAPABILITY: GENIE Shock Technology combines a poppy, playful ride with a bottomless DH feel.

ULTIMATE CONTROL: Measurably better traction than “Bike of the Year” Stumpjumper EVO.

UNMATCHED PERSONALIZATION: Six-way geometry adjustment, mixed wheel or 29”, tunable spring curve, and more.

GENIE—The Magic Carpet Ride: The biggest innovation on the Stumpjumper 15 is GENIE. This patent-pending air spring technology that we invented grants every trail rider’s three wishes: the feel and control of a coil spring, better bottom-out prevention than a standard air spring, and a tunable “platform” for a playful feel.

ILLUMINATING GENIE: GENIE combines the control-enhancing linear spring rate of a coil spring through the “bump zone” with the progressive spring rate of an air spring at the end of the stroke to avoid bottom-outs. Truly, it's the best of both worlds – coil and air – with extra tunability. Say goodbye to compromises and hello to the future of riding.

WHAT BUMP?: With 16.3% better bump force management than a traditional air-sprung shock, GENIE makes the Stumpy 15 ride like a bike with more travel. For example, the Stumpjumper 15 (with 145 mm rear wheel travel) and our Enduro (170 mm travel) both use 101 mm of travel to absorb a 1080 N bump force.

TRACTION GALORE: Extensive field testing proves that Stumpjumper 15 with GENIE delivers 57% better traction than a standard air-sprung shock because GENIE technology gives you supple, coil-like performance, which keeps the wheel in contact with the ground a greater percent of the time than a typical air spring would.

BYE, BYE, BOTTOM-OUTS: 39% fewer bottom-outs than a standard air spring. During big hit events, you benefit from the rising rate in the last 30% of the GENIE stroke. Because of this two-stage, pronounced rising rate, GENIE reduces the frequency and severity of bottom-outs.

HONED GEOMETRY: This bike’s geometry delivers big bike capability when you need it, a nimble feel in tight sections, and lively, efficient climbing manners. The generous cockpit centers you on the bike, optimizing traction and corner control. The low bottom bracket, slack head tube angle, and optimized fork offset keep things stable in the rough.

RIDE YOUR WAY: The Stumpjumper 15 seamlessly integrates benchmark geo adjustability, making it the most personalizable trail bike ever. Six distinct geometry settings allow you to hone performance for any style, any terrain. Head angle and bottom bracket height can be fine-tuned for stability or clearance.

WHEEL CHOICE: With our aftermarket shock links, you can choose between big wheels front and rear or mix things up with a 27.5” rear for a more responsive and playful ride. No matter what you choose, geometry is unaffected.

CARRY IT ALL: SWAT 4.0 on Stumpjumper 15 elevates downtube storage, an innovation we pioneered. It’s the smoothest operating, most weather-resistant, flush-mounted system ever.

MORE RELENTLESS THAN YOU: Our full suspension bikes are built to be relentless, designed to endure years of hard riding and backed by the best support and policies to keep you on the trail. Our unbeatable lifetime, no-questions-asked replacement of suspension pivot bearings to the original owner is just one way we've got you covered.

Technical Specifications

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Frameset

Frame

FACT 11m carbon chassis and rear-end, Trail Geometry, SWAT™ Door integration, head tube angle adjustment, threaded BB, internal brake and dropper cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, SRAM UDH compatible, 145mm of travel

SWAT

SWAT 4.0 internal downtube storage

Seat Binder

Alloy, 38.6mm

Suspension

Rear Shock

FOX FLOAT Performance Elite with Specialized GENIE Shock Tech, Ride Dynamics Trail Tune, 2-position lever w/3 setting Open mode tuning range, LSR adjustment, S1:210x52.5mm, S2-S6:210x55mm

Fork

FOX FLOAT 36 Performance Elite, GRIP X2 damper, HS and LS rebound and compression adjustment, 15x110mm QR axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel

Cockpit

SeatPost

PNW Loam Dropper, tool-less travel adjust, Range lever, 34.9, S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 200mm

Stem

Alloy Trail Stem, 35mm bar bore

Saddle

Bridge Comp, Hollow Cr-mo rails, S1-S2: 155mm, S3-S6: 143mm

Handlebars

Specialized, 6000 series alloy, 6-degree upsweep, 8-degree backsweep. S1-S2: 780 width, 20mm rise: S3-S4: 800 width, 30mm rise: S5-S6: 800 width, 40mm rise

Grips

Deity Lockjaw

Brakes

Front Brake

SRAM Maven Bronze, 4-piston caliper, hydraulic disc, 200mm HS2 Rotor

Rear Brake

SRAM Maven Bronze, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 200mm HS2 Rotor

Drivetrain

Shift Levers

SRAM AXS POD Controller

Rear Derailleur

SRAM GX Eagle Transmission Derailleur

Cassette

SRAM GX Eagle Transmission Cassette, 12spd, 10-52t

Chain

SRAM GX Eagle Transmission Flattop Chain

Crankset

SRAM GX Eagle Crankset, 32T ring, Integrated Guard, 55mm Chainline, S1-S3:165mm, S4-S6: 170mm

Bottom Bracket

SRAM DUB, BSA 73mm Wide, Threaded

Wheels & Tires

Rims

Roval Traverse, hookless alloy, 30mm inner width, tubeless ready, Front: 29, Rear: S1-S2: 27.5, S3- S6: 29

Front Hub

DT Swiss 370, 15x110mm, 28h

Rear Hub

DT Swiss 370, 12x148mm, 28h

Spokes

Sapim Force

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"

Inner Tubes

Standard, Presta valve

Product Details

Product ID

221401

Weight

Weight

14.47kg (31 lb, 14.4 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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S1S2S3S4S5S6
Crank Length165mm165mm165mm170mm170mm170mm
Handlebar Width780mm780mm800mm800mm800mm800mm
Stem Length40mm40mm40mm40mm40mm40mm
Saddle Width155mm155mm143mm143mm143mm143mm
Seatpost Length125mm150mm170mm200mm200mm200mm
Stack608mm618mm627mm640mm654mm667mm
Reach400mm425mm450mm475mm500mm530mm
Headtube Length95mm100mm110mm125mm140mm155mm
Headtube Angle64.5°64.5°64.5°64.5°64.5°64.5°
BB Height334mm337mm337mm337mm337mm337mm
BB Drop41mm38mm38mm38mm38mm38mm
Trail129mm130mm130mm130mm130mm130mm
Fork Length (full)551mm561mm561mm561mm561mm561mm
Fork Rake/Offset44mm44mm44mm44mm44mm44mm
Front Center720mm751mm780mm812mm843mm879mm
Chainstay Length430mm432mm435mm435mm445mm445mm
Wheelbase1149mm1181mm1213mm1244mm1285mm1322mm
Top-tube Length (horizontal)541mm573mm595mm624mm647mm677mm
Bike Standover Height738mm751mm745mm745mm745mm751mm
Seat Tube Length385mm385mm405mm425mm445mm465mm
Seat Tube Angle78°77°77°76.5°76.5°76.5°
Saddle Height for Effective ST Angle645mm690mm735mm780mm825mm870mm
Max Seatpost Insertion245mm245mm255mm255mm285mm285mm
Min Seatpost Insertion80mm80mm80mm80mm80mm80mm
Geometry

Manual Downloads

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2025 STUMPJUMPER CARBON - USER MANUAL - ENGLISH
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2025 STUMPJUMPER CARBON - USER MANUAL - CHINESE SIMPLIFIED
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2025 STUMPJUMPER CARBON - USER MANUAL - CHINESE TRADITIONAL
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2025 STUMPJUMPER CARBON - USER MANUAL - CROATIAN
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2025 STUMPJUMPER CARBON - USER MANUAL - CZECH
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2025 STUMPJUMPER CARBON - USER MANUAL - DANISH
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2025 STUMPJUMPER CARBON - USER MANUAL - DUTCH
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2025 STUMPJUMPER CARBON - USER MANUAL - FINNISH
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2025 STUMPJUMPER CARBON - USER MANUAL - FRENCH
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2025 STUMPJUMPER CARBON - USER MANUAL - GERMAN
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2025 STUMPJUMPER CARBON - USER MANUAL - HUNGARIAN
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2025 STUMPJUMPER CARBON - USER MANUAL - ITALIAN
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2025 STUMPJUMPER CARBON - USER MANUAL - JAPANESE
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2025 STUMPJUMPER CARBON - USER MANUAL - KOREAN
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2025 STUMPJUMPER CARBON - USER MANUAL - NORWEGIAN
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2025 STUMPJUMPER CARBON - USER MANUAL - POLISH
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2025 STUMPJUMPER CARBON - USER MANUAL - PORTUGUESE
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2025 STUMPJUMPER CARBON - USER MANUAL - SLOVAK
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2025 STUMPJUMPER CARBON - USER MANUAL - SLOVENIAN
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2025 STUMPJUMPER CARBON - USER MANUAL - SPANISH
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2025 STUMPJUMPER CARBON - USER MANUAL - SWEDISH
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2022 ROVAL ROAD AND MOUNTAIN WHEELSETS - OWNER'S MANUAL - CHINESE SIMPLIFIED
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2022 ROVAL ROAD AND MOUNTAIN WHEELSETS - OWNER'S MANUAL - ENGLISH
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2022 ROVAL ROAD AND MOUNTAIN WHEELSETS - OWNER'S MANUAL - FRENCH
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2022 ROVAL ROAD AND MOUNTAIN WHEELSETS - OWNER'S MANUAL - GERMAN
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2022 ROVAL ROAD AND MOUNTAIN WHEELSETS - OWNER'S MANUAL - PORTUGUESE BRAZILIAN
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2022 ROVAL ROAD AND MOUNTAIN WHEELSETS - OWNER'S MANUAL - SPANISH

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