The Specialized Stumpjumper 15 Alloy is a trail-ready full-suspension mountain bike, designed to provide unparalleled control, efficiency, and durability on the roughest terrain. Built with a high-performance aluminum frame, modern suspension technology, and premium components, this bike ensures an engaging, playful, and confident ride for every trail enthusiast.
Lightweight & Durable Alloy Frame
Crafted from premium aluminum, the Stumpjumper 15 Alloy features butted and hydroformed tubing for a perfect balance of strength, weight, and stiffness. With modern geometry and internal cable routing, the frame provides exceptional handling and durability, while remaining sleek and upgrade-ready.
Advanced Suspension for Maximum Control
Equipped with modern suspension kinematics, this bike features a RockShox 35 Silver fork and a custom-tuned rear shock, providing balanced traction, control, and small-bump sensitivity. The optimized anti-squat characteristics ensure efficient pedaling, while progressive geometry enhances confidence on descents.
Reliable Drivetrain & Braking System
The SRAM Eagle 1x drivetrain delivers smooth shifting and a wide gear range, ensuring effortless climbing and stable descending. SRAM hydraulic disc brakes provide consistent stopping power, allowing you to tackle technical sections with confidence.
Durable & High-Performance Wheelset
Rolling on sturdy alloy wheels, the Stumpjumper 15 Alloy is built to withstand rough terrain while maintaining agility and speed. The tubeless-ready design offers increased traction and puncture resistance, enhancing overall ride quality.
Why choose this bike?
✅ Premium alloy frame – lightweight, durable, and designed for aggressive trail riding.
✅ Full-suspension setup – optimally tuned front and rear suspension for smooth handling.
✅ SRAM Eagle drivetrain – wide-range gearing for versatility on all terrain.
✅ SRAM hydraulic disc brakes – powerful and precise stopping performance.
✅ Tubeless-ready wheels – improved traction and durability for rough trails.
Key Features
Frame: Butted & hydroformed aluminum, internal cable routing, modern trail geometry
Fork: RockShox 35 Silver, air spring, adjustable damping
Rear Shock: Custom-tuned air shock, efficient pedaling platform
Drivetrain: SRAM Eagle 1x system
Brakes: SRAM hydraulic disc brakes
Wheels: Tubeless-ready alloy rims, optimized for control and durability
Who is this bike for?
The Specialized Stumpjumper 15 Alloy is ideal for trail riders, all-mountain adventurers, and riders looking for a full-suspension bike that balances efficiency and fun. Whether you're tackling steep descents, technical rock gardens, or fast-flowing trails, this bike delivers top-tier performance at an accessible price.
Brand |
Specialized
|
Accessories/Pedals |
PEDAL, TEST RIDE PEDALS PROVIDED BY SPECIALIZED
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Frameset/Frame |
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 of travel
|
Wheels/Spokes |
Stainless, 14g
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Wheels/Rims |
Specialized Alloy, Tubeless Ready, 29mm internal width, 28h, Front: 29, Rear: S1-S2: 27.5, S3- S6: 29
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Wheels/Rear tire |
Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, S1-S2: 27.5x2.3, S3- S6: 29x2.3"
|
Wheels/Rear hub |
Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h
|
Wheels/Inner tubes |
Standard, Presta valve
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Wheels/Front tire |
Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3"
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Wheels/Front hub |
Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h
|
Suspension/Rear shock |
X-Fusion 02 Pro RL, Ride Dynamics Trail Tune, rebound adjust, lockout S1:210x52.5mm, S2-S6:210x55mm
|
Suspension/Fork |
RockShox, Psylo Silver, Motion Control Damper, 15x110 axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel
|
Frameset/Seat binder |
Alloy, 38.6mm
|
Drivertain/Shift levers |
Shimano Deore, M6100, 12spd
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Drivertain/Rear derailleur |
Shimano Deore, M6100, 12pd, Shadow Plus
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Drivertain/Crankset |
Shimano Deore, M6120, 30T ring, 55mm chainline, S1-S3:165mm, S4-S6: 170mm
|
Drivertain/Chain |
Shimano Deore, M6100, 12-speed
|
Drivertain/Cassette |
Shimano Deore M6100, 12spd w/Hyperglide+, 10-51t
|
Cockpit/Stem |
Alloy Trail Stem, 35mm bar bore
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Cockpit/Seatpost |
TranzX Dropper, remote SLR LE lever, 34.9, S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 200mm
|
Cockpit/Saddle |
Bridge, Steel rails, S1-S2: 155mm, S3-S6: 143mm
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Cockpit/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
|
Cockpit/Grips |
Specialized Trail Grips
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Brakes/Rear brake |
Shimano, BR-MT420, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 203mm
|
Brakes/Front brake |
Shimano, BR-MT420, 4-piston caliper, hydraulic disc, 203mm
|
Accessories/Swat |
SWAT internal downtube storage
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