2015 Specialized Diverge A1 vs 2017 Trek Boone Disc
The 50 is the Trek Boone Disc size closest to your 49 Specialized Diverge 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 Boone Disc
Compared with the Specialized Diverge A1 in 49, the Trek Boone Disc in 50 places the top of the head tube 6 mm higher and 3 mm further back, relative to the bottom bracket. Its wheelbase is 18 mm longer, which can contribute to stability at speed.
- Frame stack
- +6 mm
- Higher front end
- Frame reach
- −3 mm
- Shorter frame reach
- Wheelbase
- +18 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- +13 mm
- Longer: more planted
The two frames
Only the Specialized Diverge A1 is drawn. The Trek Boone Disc numbers we have for size 50 are missing the seat angle.
Geometry side by side
| Measurement | Specialized Diverge A1 49 | Trek Boone Disc 50 | Difference |
|---|---|---|---|
| Reach | 378mm | 375 | −3 mm |
| Stack | 528mm | 534 | +6 mm |
| Head tube angle | 72° | 71.0° | −1.0° |
| Seat tube angle | 75.5° | not listed | |
| Effective top tube | 518mm | 518 | ±0 mm |
| Chainstay length | 412mm | 425 | +13 mm |
| Wheelbase | 983mm | 1001 | +18 mm |
| BB drop | 73mm | 70 | −3 mm |
| Standover | 730mm | 747 | +17 mm |
| Seat tube length | 418mm | 476 | +58 mm |
| Head tube length | 94mm | 110 | +16 mm |
Differences are the Trek Boone Disc minus the Specialized Diverge A1. Full charts: 2015 Specialized Diverge A1, 2017 Trek Boone Disc.
Where each sits in its class
Specialized Diverge A1Trek Boone 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 A1A1 | Trek Boone Disc5 Disc |
|---|---|---|
| Shifter | Shimano Claris R2400 | Shimano RS685 |
| Derailleur | Shimano Claris R2400 | Shimano 105 |
| Chain | KMC X9 | Shimano 105 |
| Crankset | Shimano Claris | FSA Energy Cross |
| Wheelset | Specialized AXIS Classic | not listed |
| Tire | Specialized Espoir Sport | Bontrager CX3 Team Issue |
| Brake | Tektro Spyre | Shimano RS685 |
| Saddle | Specialized Toupé Sport | Bontrager Paradigm |
| Frame | not listed | Trek OCLV |
| Fork | not listed | Trek IsoSpeed Cross |
| Cassette | not listed | Shimano 105 |
| Bottom bracket | not listed | Trek BB90 |
| Handlebar | not listed | Bontrager VR-C |
| Seatpost | not listed | Bontrager Tuned |
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