2021 Trek Fuel EX AL Gen 5 Frameset vs 2019 Specialized Stumpjumper ST Men's Comp Carbon 27.5
The L is the Specialized Stumpjumper ST Men's Comp Carbon 27.5 size closest to your ML Trek Fuel EX AL Gen 5 Frameset. 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 Specialized Stumpjumper ST Men's Comp Carbon 27.5
Compared with the Trek Fuel EX AL Gen 5 Frameset in ML, the Specialized Stumpjumper ST Men's Comp Carbon 27.5 in L places the top of the head tube 9 mm higher and 5 mm further forward, relative to the bottom bracket. Its wheelbase is 8 mm longer, which can contribute to stability at speed.
- Frame stack
- +9 mm
- Higher front end
- Frame reach
- +5 mm
- Longer frame reach
- Wheelbase
- +8 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- −4 mm
- Shorter: livelier
The two frames
Trek Fuel EX AL Gen 5 Frameset, MLSpecialized Stumpjumper ST Men's Comp Carbon 27.5, LDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel EX AL Gen 5 Frameset ML | Specialized Stumpjumper ST Men's Comp Carbon 27.5 L | Difference |
|---|---|---|---|
| Reach | 460 | 465mm | +5 mm |
| Stack | 609 | 618mm | +9 mm |
| Head tube angle | 66.5° | 66.5° | ±0.0° |
| Seat tube angle | 75.5° | 75.6° | +0.1° |
| Effective top tube | 618 | 624mm | +6 mm |
| Chainstay length | 436 | 432mm | −4 mm |
| Wheelbase | 1195 | 1203mm | +8 mm |
| BB drop | 28 | 28mm | ±0 mm |
| BB height | 346 | 325mm | −21 mm |
| Standover | 751 | 750mm | −1 mm |
| Seat tube length | 435 | 455mm | +20 mm |
| Head tube length | 105 | 140mm | +35 mm |
| Fork length | not listed | 522mm |
Differences are the Specialized Stumpjumper ST Men's Comp Carbon 27.5 minus the Trek Fuel EX AL Gen 5 Frameset. Full charts: 2021 Trek Fuel EX AL Gen 5 Frameset, 2019 Specialized Stumpjumper ST Men's Comp Carbon 27.5.
Where each sits in its class
Trek Fuel EX AL Gen 5 FramesetSpecialized Stumpjumper ST Men's Comp Carbon 27.5
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 | Trek Fuel EX AL Gen 5 FramesetAL Gen 5 Frameset | Specialized Stumpjumper ST Men's Comp Carbon 27.5Men's Comp Carbon 27.5 12-speed |
|---|---|---|
| Frame | Trek Alpha Platinum | not listed |
| Stem | Bontrager Line | not listed |
| Headset | Trek Knock Block | not listed |
| Fork | not listed | Fox FLOAT 34 Rhythm |
| Rear shock | not listed | Fox Float DPS Performance |
| Shifter | not listed | SRAM NX Eagle |
| Derailleur | not listed | SRAM NX Eagle |
| Cassette | not listed | SRAM NX Eagle |
| Chain | not listed | SRAM NX Eagle |
| Crankset | not listed | SRAM NX Eagle |
| Bottom bracket | not listed | SRAM DUB |
| Tire | not listed | Specialized Butcher, Specialized Purgatory |
| Rim | not listed | Roval Traverse 27.5 |
| Brake | not listed | SRAM Guide R |
| Grips | not listed | Specialized Sip Grip |
| Dropper post | not listed | X-Fusion Manic |
| Seatpost | not listed | X-Fusion Manic |
| Saddle | not listed | Specialized Phenom Comp |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
