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Specialized Stumpjumper 15 Alloy
$1,319.00
The Specialized Stumpjumper 15 Alloy is a trail mountain bike with an M5 Alloy chassis, 145mm rear travel, X-Fusion 02 Pro RL shock, RockShox Psylo Silver fork, Shimano Deore 12-speed drivetrain, Shimano MT-420 4-piston hydraulic disc brakes, and SWAT internal downtube storage.
Description
Specialized Stumpjumper 15 Alloy Overview
The Specialized Stumpjumper 15 Alloy is a trail mountain bike with an M5 Alloy chassis, 145mm rear travel, X-Fusion 02 Pro RL rear shock, RockShox Psylo Silver fork, Shimano Deore 12-speed drivetrain, and Shimano BR-MT420 hydraulic disc brakes. It combines Trail Geometry with SWAT Door integration, head tube angle adjustment, a threaded bottom bracket, internal cable routing, sealed cartridge bearing pivots, and SRAM UDH compatibility.
The X-Fusion 02 Pro RL rear shock uses Ride Dynamics Trail Tune with rebound adjustment and lockout. The RockShox Psylo Silver fork uses a Motion Control Damper, 15x110mm axle, 44mm offset, and size-specific travel with 140mm on S1 and 150mm on S2-S6. The build also includes Specialized Alloy tubeless-ready rims, sealed cartridge bearing hubs, GRID TRAIL tires, Shimano Deore components, and a TranzX Dropper seatpost.
Key Features of Specialized Stumpjumper 15 Alloy
- M5 Alloy chassis and rear-end give the bike a trail frame with 145mm of rear travel.
- X-Fusion 02 Pro RL rear shock includes Ride Dynamics Trail Tune, rebound adjustment, and lockout.
- RockShox Psylo Silver fork uses a Motion Control Damper with size-specific travel.
- Shimano Deore M6100 drivetrain gives the bike a 12-speed setup with a 10-51t cassette.
- Shimano BR-MT420 4-piston hydraulic disc brakes use a 203mm front rotor and size-specific rear rotor setup.
- Specialized Alloy rims use a 29mm internal width and tubeless-ready construction.
- Butcher and Eliminator GRID TRAIL tires pair GRIPTON T9 front compound with GRIPTON T7 rear compound.
- SWAT internal downtube storage adds integrated frame storage.
- Head tube angle adjustment allows the trail geometry setup to be fine-tuned.
- TranzX Dropper seatpost gives the bike size-specific dropper travel.
Ride Use
This is a trail mountain bike for trail riding. The M5 Alloy frame, 145mm rear travel, RockShox fork, X-Fusion rear shock, Shimano 4-piston brakes, GRID TRAIL tires, and adjustable geometry support controlled riding on trail routes. The wheel setup uses a 29-inch front wheel, with 27.5-inch rear wheel on S1-S2 and 29-inch rear wheel on S3-S6.
Why Choose This Bike
The Stumpjumper 15 Alloy combines an M5 Alloy frame, X-Fusion 02 Pro RL rear shock, RockShox Psylo Silver fork, Shimano Deore 12-speed drivetrain, Shimano BR-MT420 brakes, and SWAT internal downtube storage in one trail-focused build. It also has Specialized Alloy tubeless-ready rims, sealed cartridge bearing hubs, a TranzX Dropper seatpost, and a weight of 16.57 kg / 36 lb 8.5 oz in size S4. It comes in Gloss White Mountains and Satin Cast Blue, with frame and fork coverage under a lifetime warranty for the original owner and other Specialized-branded parts covered for 2 years.
Specifications
Product Specifications
| Feature | Details |
|---|---|
| Product ID | 276239 |
| 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 |
| Seat Binder | Alloy, 38.6mm |
| 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 |
| Front Brake | Shimano BR-MT420, 4-piston caliper, hydraulic disc, 203mm |
| Rear Brake | Shimano BR-MT420, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 203mm |
| Shift Levers | Shimano Deore M6100, 12-speed |
| Rear Derailleur | Shimano Deore M6100, 12-speed, Shadow Plus |
| Cassette | Shimano Deore M6100, 12-speed with Hyperglide+, 10-51t |
| Chain | Shimano Deore M6100, 12-speed |
| Crankset | Shimano Deore M6120, 30T ring, 55mm chainline, S1-S3: 165mm, S4-S6: 170mm |
| Rims | Specialized Alloy, tubeless ready, 29mm internal width, 28h, front: 29", rear S1-S2: 27.5", S3-S6: 29" |
| Front Hub | Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h |
| Rear Hub | Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h |
| Spokes | 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" |
| Inner Tubes | Standard, Presta valve |
| Stem | Alloy Trail Stem, 35mm bar bore |
| Handlebars | Specialized 6000 series alloy, 6-degree upsweep, 8-degree backsweep, S1-S2: 780mm width and 20mm rise, S3-S4: 800mm width and 30mm rise, S5-S6: 800mm width and 40mm rise |
| Grips | Specialized Trail Grips |
| Saddle | Bridge, Steel rails, S1-S2: 155mm, S3-S6: 143mm |
| SeatPost | TranzX Dropper, remote SLR LE lever, 34.9, S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 200mm |
| SWAT | SWAT internal downtube storage |
| Weight | 16.57 kg / 36 lb 8.5 oz, size S4 |
| Colors | Gloss White Mountains, Satin Cast Blue |
| Manufacturer Warranty | Frame and fork are covered by a lifetime warranty for the original owner. Other Specialized-branded parts are covered for 2 years. |
FAQ
FAQ's Specialized Stumpjumper 15 Alloy
What type of bike is the Specialized Stumpjumper 15 Alloy?
The Specialized Stumpjumper 15 Alloy is a trail mountain bike. It uses an M5 Alloy chassis, 145mm rear travel, Trail Geometry, X-Fusion rear shock, and RockShox fork.
What drivetrain does the Specialized Stumpjumper 15 Alloy use?
This bike uses a Shimano Deore M6100 12-speed drivetrain. It also has a Shimano Deore M6100 10-51t cassette with Hyperglide+, Shimano Deore M6100 chain, and Shimano Deore M6120 crankset.
What suspension comes on the Specialized Stumpjumper 15 Alloy?
The rear shock is an X-Fusion 02 Pro RL with Ride Dynamics Trail Tune, rebound adjustment, and lockout. The fork is a RockShox Psylo Silver with Motion Control Damper, with 140mm travel on S1 and 150mm travel on S2-S6.
What warranty is included with the Specialized Stumpjumper 15 Alloy?
Frame and fork are covered by a lifetime warranty for the original owner. Other Specialized-branded parts are covered for 2 years. The bike also includes lifetime replacement of suspension pivot bearings to the original owner.
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