2017 Specialized Diverge Sport A1 vs 2019 Trek Checkpoint ALR
The 61 is the Trek Checkpoint ALR 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 Checkpoint ALR
Compared with the Specialized Diverge Sport A1 in 61, the Trek Checkpoint ALR in 61 places the top of the head tube 6 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
- −6 mm
- Lower front end
- Frame reach
- −1 mm
- About the same reach
- Wheelbase
- +5 mm
- Longer: steadier at speed
- Head angle
- −0.4°
- Slacker: calmer steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Only the Specialized Diverge Sport A1 is drawn. The Trek Checkpoint ALR numbers we have for size 61 are missing the seat angle.
Geometry side by side
| Measurement | Specialized Diverge Sport A1 61 | Trek Checkpoint ALR 61 | Difference |
|---|---|---|---|
| Reach | 398mm | 397 | −1 mm |
| Stack | 644mm | 638 | −6 mm |
| Head tube angle | 73° | 72.6° | −0.4° |
| Seat tube angle | 72.5° | not listed | |
| Effective top tube | 601mm | 592 | −9 mm |
| Chainstay length | 420mm | 425 | +5 mm |
| Wheelbase | 1039mm | 1044 | +5 mm |
| BB drop | 70mm | 74 | +4 mm |
| BB height | 275.5mm | not listed | |
| Standover | 851mm | 858 | +7 mm |
| Seat tube length | 535mm | 610 | +75 mm |
| Fork length | 400mm | not listed | |
| Head tube length | 214mm | 200 | −14 mm |
Differences are the Trek Checkpoint ALR minus the Specialized Diverge Sport A1. Full charts: 2017 Specialized Diverge Sport A1, 2019 Trek Checkpoint ALR.
Where each sits in its class
Specialized Diverge Sport A1Trek Checkpoint ALR
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 Checkpoint ALRALR 4 |
|---|---|---|
| Shifter | Shimano Sora | Shimano RS405 |
| Derailleur | Shimano Sora | Shimano Tiagra |
| Chain | KMC X9 | KMC X10 |
| Crankset | Praxis Alba | Shimano Tiagra |
| Wheelset | Specialized Axis Sport | not listed |
| Tire | Specialized Espoir Sport | Bontrager GR1 Comp |
| Brake | Tektro Mira | Shimano RS505 |
| Saddle | Specialized Toupé Sport | Bontrager Montrose |
| Frame | not listed | Trek Alpha |
| Fork | not listed | Trek Checkpoint |
| Cassette | not listed | Shimano Tiagra |
| Handlebar | not listed | Bontrager RL IsoZone VR-CF |
| Seatpost | not listed | Bontrager Approved |
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