2026 Specialized Stumpjumper 15 Pro vs 2026 GT Sensor Carbon Pro
The S is the GT Sensor Carbon Pro size closest to your S2 Specialized Stumpjumper 15 Pro. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the GT Sensor Carbon Pro
Compared with the Specialized Stumpjumper 15 Pro in S2, the GT Sensor Carbon Pro in S places the top of the head tube 3 mm higher and 10 mm further forward, relative to the bottom bracket. Its wheelbase is 5 mm longer, which can contribute to stability at speed.
- Frame stack
- +3 mm
- Higher front end
- Frame reach
- +10 mm
- Longer frame reach
- Wheelbase
- +5 mm
- Longer: steadier at speed
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- +8 mm
- Longer: more planted
The two frames
Specialized Stumpjumper 15 Pro, S2GT Sensor Carbon Pro, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper 15 Pro S2 | GT Sensor Carbon Pro S | Difference |
|---|---|---|---|
| Reach | 420 | 430 | +10 mm |
| Stack | 621 | 624 | +3 mm |
| Head tube angle | 64 | 65.0 | +1.0° |
| Seat tube angle | 76.5 | 77.0 | +0.5° |
| Effective top tube | 574 | 574 | ±0 mm |
| Chainstay length | 432 | 440 | +8 mm |
| Wheelbase | 1186 | 1191 | +5 mm |
| BB drop | 35 | 36 | +1 mm |
| BB height | 340 | not listed | |
| Standover | 751 | not listed | |
| Seat tube length | 385 | 380 | −5 mm |
| Head tube length | 100 | 110 | +10 mm |
Differences are the GT Sensor Carbon Pro minus the Specialized Stumpjumper 15 Pro. Full charts: 2026 Specialized Stumpjumper 15 Pro, 2026 GT Sensor Carbon Pro.
Where each sits in its class
Specialized Stumpjumper 15 ProGT Sensor Carbon Pro
Each bike is ranked against the other trail bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized Stumpjumper 15 ProPro | GT Sensor Carbon ProCarbon Pro |
|---|---|---|
| Frame | Specialized Stumpjumper 15 | GT Sensor |
| Fork | Fox 36 Factory | RockShox Lyrik Select |
| Rear shock | Fox Float X Factory | RockShox Super Deluxe Select |
| Shifter | SRAM AXS POD Rocker | SRAM NX Eagle |
| Derailleur | SRAM X0 Eagle Transmission | SRAM GX AXS |
| Cassette | SRAM 1295 X01 | SRAM PG |
| Crankset | SRAM X0 Eagle Transmission | TruVativ Descendant GX |
| Chainring | SRAM 32 | not listed |
| Bottom bracket | SRAM DUB GX | SRAM DUB BSA |
| Wheelset | Roval Traverse SL II | WTB KOM Trail |
| Tire | Specialized Butcher, Specialized Eliminator | Continental Kryptotal |
| Brake | SRAM Maven Silver Stealth | SRAM Code R |
| Rotor | SRAM CenterLine | SRAM Code R |
| Handlebar | Deity Speedway | GT Alloy Riser |
| Dropper post | BikeYoke Revive Max 3.0 | not listed |
| Saddle | Specialized Bridge Expert | not listed |
| Headset | not listed | FSA 42 |
| Seatpost | not listed | TranzX adjustable |
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