


Specialized
Stumpjumper 15 EVO Alloy Frame - 2026
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Highlights
- GENIE Shock Technology – Coil-like traction with air-spring bottom-out control and independent tuning
- 145mm Rear Travel – Big-bike feel with trail-bike efficiency
- Six-Way Geometry Adjustment – Dial in head angle and bottom bracket height for any terrain
- Mixed Wheel or Full 29” Compatible – Customize ride feel without affecting geometry
- M5 Alloy Frame with SWAT™ Storage – Durable construction with integrated downtube storage
- Lifetime Suspension Pivot Bearing Replacement – Built to last, backed for the long hau
Description
The Stumpjumper 15 EVO Alloy is built to obliterate compromises in the trail category, blending big-bike confidence with short-travel efficiency and playfulness. It devours bumps, stays composed in rough terrain, and climbs with impressive efficiency—all while delivering a lively, responsive ride. Designed for riders who want one bike that can truly do it all, the Stumpjumper 15 EVO Alloy balances capability and control without sacrificing fun.At the core of its performance is GENIE Shock Technology, a patent-pending air spring that combines the supple, traction-rich feel of a coil with the bottom-out resistance of a progressive air spring. The result is smoother bump absorption, dramatically improved traction, and fewer harsh bottom-outs, making 145mm of rear travel feel far deeper and more controlled. Add in unmatched adjustability, modern geometry, and durable M5 alloy construction, and this bike is ready for long days, hard hits, and everything in between.
- M5 alloy Stumpjumper 15 frame
- FOX FLOAT X Performance with Specialized GENIE Shock
- Alloy seat binder
- SRAM UDH
- Angle Adjust Headset
| Frame Material: | Aluminum |
| Wheel Size: | 29", MX (29"/27.5") |
| Front Suspension Travel: | 160mm |
| Rear Suspension Travel: | 145mm |
| Rear Shock: | FOX FLOAT X Performance with Specialized GENIE |
| Rear Shock Size: | 210mm x 55mm |
| Rear Axle Width: | 12x148mm Boost |
| Included Headset: | Specialized Angle Adjust |
| BB Standard: | 73mm BSA |
| ISCG Tabs: | ISCG '05 3-Bolt |
| Brake Mount Type: | Post-Mount 200mm |
| Min Rear Rotor Size: | 200mm |
| Max Rear Rotor Size: | 223mm |
| Minimum Chainring Size: | 30t |
| Maximum Chainring Size: | 34t |
| Seat Post Diameter: | 34.9mm |
| Seat Clamp Diameter: | 38.6mm |
| Frame Storage: | SWAT 4.0 downtube storage |
| Frame Storage Bag: | One SWAT Pod storage bag |
| Water Bottle Cage Mounts: | 1 set, plus SWAT Bottle Storage |
| Intended Use: | Trail/AM |
| Warranty: | 2 years or Lifetime with registration | Lifetime Bearing Replacement |
| Size | S1 | S2 | S3 | S4 | S5 | S6 |
|---|---|---|---|---|---|---|
| Reach | 400 | 420 | 445 | 470 | 495 | 525 |
| Stack | 611 | 621 | 630 | 644 | 658 | 671 |
| Top Tube | 542 | 574 | 596 | 625 | 649 | 678 |
| Wheelbase | 1153 | 1186 | 1217 | 1249 | 1290 | 1327 |
| Head Tube° | 64° | 64° | 64° | 64° | 64° | 64° |
| Head Tube | 95 | 100 | 110 | 125 | 140 | 155 |
| Seat Tube° | 77.7° | 76.5° | 76.5° | 76° | 76° | 76° |
| Seat Tube | 385 | 385 | 405 | 425 | 445 | 465 |
| BB Height | 337 | 340 | 340 | 340 | 340 | 340 |
| BB Drop | 38 | 35 | 35 | 35 | 35 | 35 |
| Standover | 738 | 751 | 745 | 745 | 745 | 751 |
| Chainstay | 430 | 432 | 435 | 435 | 445 | 445 |
| Max Seatpost Insertion | 245 | 245 | 255 | 255 | 285 | 285 |

