2015 Specialized Diverge Sport A1 vs 2017 Trek Crockett Disc Frameset
The 61 is the Trek Crockett Disc Frameset size closest to your 61 Specialized Diverge Sport A1. 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 Crockett Disc Frameset
Compared with the Specialized Diverge Sport A1 in 61, the Trek Crockett Disc Frameset in 61 places the top of the head tube 19 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 5 mm longer, which can contribute to stability at speed.
- Frame stack
- −19 mm
- Lower front end
- Frame reach
- −1 mm
- About the same reach
- Wheelbase
- +5 mm
- Longer: steadier at speed
- Head angle
- −0.7°
- Slacker: calmer steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Only the Specialized Diverge Sport A1 is drawn. The Trek Crockett Disc Frameset numbers we have for size 61 are missing the seat angle.
Geometry side by side
| Measurement | Specialized Diverge Sport A1 61 | Trek Crockett Disc Frameset 61 | Difference |
|---|---|---|---|
| Reach | 398mm | 397 | −1 mm |
| Stack | 643mm | 624 | −19 mm |
| Head tube angle | 73° | 72.3° | −0.7° |
| Seat tube angle | 72.5° | not listed | |
| Effective top tube | 600mm | 588 | −12 mm |
| Chainstay length | 420mm | 425 | +5 mm |
| Wheelbase | 1038mm | 1043 | +5 mm |
| BB drop | 70mm | 65 | −5 mm |
| Standover | 851mm | 843 | −8 mm |
| Seat tube length | 535mm | 583 | +48 mm |
| Head tube length | 214mm | 205 | −9 mm |
Differences are the Trek Crockett Disc Frameset minus the Specialized Diverge Sport A1. Full charts: 2015 Specialized Diverge Sport A1, 2017 Trek Crockett Disc Frameset.
Where each sits in its class
Specialized Diverge Sport A1Trek Crockett Disc Frameset
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 Sport A1Sport A1 | Trek Crockett Disc FramesetCrockett Disc Frameset |
|---|---|---|
| Shifter | Shimano Sora | not listed |
| Derailleur | Shimano Sora | not listed |
| Chain | KMC X9 | not listed |
| Crankset | Shimano Sora | not listed |
| Wheelset | Specialized AXIS Classic | not listed |
| Tire | Specialized Espoir Sport | not listed |
| Brake | Tektro Spyre | not listed |
| Saddle | Specialized Toupé Sport | not listed |
| Frame | not listed | Trek Alpha |
| Fork | not listed | Trek IsoSpeed Cross |
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