2026 Specialized Diverge Comp Alloy vs 2025 Trek FX Disc
The 45 is the Trek FX Disc size closest to your 49 Specialized Diverge Comp Alloy. 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 Trek FX Disc
Compared with the Specialized Diverge Comp Alloy in 49, the Trek FX Disc in 45 places the top of the head tube 5 mm higher and 20 mm further forward, relative to the bottom bracket. Its wheelbase is 40 mm longer, which can contribute to stability at speed.
- Frame stack
- +5 mm
- Higher front end
- Frame reach
- +20 mm
- Longer frame reach
- Wheelbase
- +40 mm
- Longer: steadier at speed
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- +17 mm
- Longer: more planted
The two frames
Specialized Diverge Comp Alloy, 49Trek FX Disc, 45Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Diverge Comp Alloy 49 | Trek FX Disc 45 | Difference |
|---|---|---|---|
| Reach | 365 | 385.0 | +20 mm |
| Stack | 563 | 568.0 | +5 mm |
| Head tube angle | 70 | 70.5 | +0.5° |
| Seat tube angle | 74.5 | 74.5 | ±0.0° |
| Chainstay length | 430 | 447.0 | +17 mm |
| Wheelbase | 1019 | 1059.0 | +40 mm |
| BB drop | 85 | 65.0 | −20 mm |
| Standover | 700 | 715.0 | +15 mm |
| Seat tube length | 400 | 375.0 | −25 mm |
| Head tube length | 90 | 140.0 | +50 mm |
| Effective top tube | not listed | 543.0 | |
| BB height | not listed | 285.0 |
Differences are the Trek FX Disc minus the Specialized Diverge Comp Alloy. Full charts: 2026 Specialized Diverge Comp Alloy, 2025 Trek FX Disc.
Where each sits in its class
Specialized Diverge Comp AlloyTrek FX Disc
Each bike is ranked against the other gravel 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 Diverge Comp Alloy4 Comp Alloy | Trek FX Disc3 Disc |
|---|---|---|
| Frame | Specialized Diverge | Trek Alpha Gold Aluminum |
| Fork | Specialized Future Shock 3.1 | Trek FX |
| Shifter | SRAM Apex | Shimano CUES U6000 |
| Derailleur | SRAM Eagle Apex | Shimano CUES U6000 GS |
| Cassette | SRAM SX Eagle | Shimano LG300 |
| Chain | SRAM NX Eagle | Shimano LG500 |
| Crankset | SRAM Apex | Prowheel Alloy |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | DT Swiss G540 | Bontrager Tubeless Ready Disc |
| Tire | Specialized Tracer | Bontrager H2 |
| Brake | SRAM Apex, SRAM Apex AXS | Shimano UR300 |
| Handlebar | Specialized Hover | Bontrager Satellite Plus |
| Stem | Specialized Future | Bontrager Comp |
| Grips | Supacaz Suave | Bontrager Satellite IsoZone Plus |
| Seatpost | Specialized Alloy | Alloy |
| Saddle | Specialized Power Sport | Bontrager H1 |
| Chainring | not listed | Prowheel 40T narrow-wide |
| Pedals | not listed | Bontrager City |
| Hub | not listed | Formula DC-20 front, Formula DC-22 rear |
| Rim | not listed | Bontrager Tubeless Ready Disc |
| Rotor | not listed | Shimano SM-RT26 |
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