- DESCRIPTION
- Specifications
- Geometry
- Sizing Guide
DESCRIPTION
Stumpjumper 15 Alloy 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.
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All-new M5 alloy frame with SWAT door integration
Robust Specialized alloy wheels with sealed cartridge bearings
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Ride Dynamics tuned FOX FLOAT Performance with Specialized GENIE patent-pending air spring technology provides maximum grip and traction found in a linear coil spring, bottom-out prevention found in a progressive air spring, and the ability to tune mid-stroke and end-stroke support independently. 2-position open and firm damper adjustments.
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Eat up the chunkiest trails with the FOX FLOAT 36 Rhythm fork with GRIP damper
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Performance-focused and durable Shimano SLX drivetrain
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Big stopping power from TRP Trail EVO 4-piston brakes
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Trustworthy time and time again X-Fusion Manic dropper post
- Lifetime replacement of suspension pivot bearings to the original owner
Specifications
SWAT
SWAT internal downtube storage
Frame
M5 Alloy chassis and rear-end, head tube angle adjustment, and 145mm of travel
Rear Shock
FOX FLOAT Performance with Specialized GENIE Shock Tech, Ride Dynamics Trail Tune, 2-position lever w/ LSR adjustment, S1:210x52.5mm, S2-S6:210x55mm
Fork
FOX FLOAT 36 Rhythm, GRIP damper, two position Sweep adjustment, 15x110mm QR axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel
Front Brake
TRP Trail EVO, 4-piston caliper, hydraulic disc, 203mm
Rear Brake
TRP Trail EVO, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 203mm
Shifter
Shimano SLX M7100, 12-Speed
Rear Derailleur
Shimano SLX M7100, 12-Speed SGS
Cassette
Shimano SLX M7100, 12-Speed w/Hyperglide+, 10-51T
Chain
Shimano SLX M7100, 12-Speed
Crankset
Shimano SLX, M7120, 32T ring, 55mm chainline, S1-S3:165mm, S4-S6: 170mm
Bottom Brackets
Shimano, BB-MT801, Threaded
Rims
Specialized, hookless alloy, 30mm inner width, tubeless ready, 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
DT Swiss Industry
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"
Stem
Alloy Trail Stem, 35mm bar bore
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
Specialized Trail Grips
Saddle
Bridge, Steel rails, S1-S2: 155mm, S3-S6: 143mm
Seatpost
X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SLR LE lever, 34.9, S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 190mm
Weight
16.17 kg (35 lb, 10.4 oz) - Size S4
*Specification subject to change without notice.
Geometry
| S1 | S2 | S3 | S4 | S5 | S6 | ||
|---|---|---|---|---|---|---|---|
| A | Reach | 400 | 425 | 450 | 475 | 500 | 530 |
| B | Stack | 608 | 618 | 627 | 640 | 654 | 667 |
| C | Headtube Angle | 64.5 | 64.5 | 64.5 | 64.5 | 64.5 | 64.5 |
| D | Seat Tube Length | 385 | 385 | 405 | 425 | 445 | 465 |
| E | Front Center | 720 | 751 | 780 | 812 | 843 | 879 |
| F | Bottom Bracket Height | 334 | 337 | 337 | 337 | 337 | 337 |
| G | Bottom Bracket Drop | 41 | 38 | 38 | 38 | 38 | 38 |
| H | Wheelbase | 1149 | 1181 | 1213 | 1244 | 1285 | 1322 |
| I | Chainstay Length | 430 | 432 | 435 | 435 | 445 | 445 |
| J | Headtube Length | 95 | 100 | 110 | 125 | 140 | 155 |
| K | Top Tube Length | 541 | 573 | 595 | 624 | 647 | 677 |
| L | Seat Tube Angle | 77 | 76.5 | 77 | 76.9 | 77.3 | 77.6 |
| M | Bike Standover Height | 738 | 751 | 745 | 745 | 745 | 751 |
*ALL MEASUREMENTS IN DEGREES OR MILLIMETRES
Sizing Guide
| Size | Height | |
|---|---|---|
| Imperial | Metric | |
| S1 | 4'11" - 5'3" | 150 - 160cm |
| S2 | 5'2" - 5'8" | 157 - 173cm |
| S3 | 5'5" - 5'11" | 165 - 180cm |
| S4 | 5'8" - 6'2" | 173 - 188cm |
| S5 | 5'10" - 6'4" | 178 - 193cm |
| S6 | 6'2" - 6'8" | 188 - 203cm |
The sizing chart is a great place to start when picking your next bike but everyone will fit a bike a bit differently. Your torso, arm, and leg lengths all play into what size of bike you may need. Plus, there's your own personal preference.
We always recommend swinging by the shop and taking the bike that you're looking for a spin to see how it feels. If you're unable to come by, looking at the geometry of your current bike and comparing it is a good place to start. If you have any further questions, our customer service team is there to help.
