2019 Trek Checkpoint ALR Women's vs 2021 Trek Boone Disc
The 50 is the Trek Boone Disc size closest to your 49 Trek Checkpoint ALR Women's. 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 Trek Checkpoint ALR Women's in 49, the Trek Boone Disc in 50 places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket. Its wheelbase is 6 mm longer, which can contribute to stability at speed.
- Frame stack
- +2 mm
- About the same height
- Frame reach
- +2 mm
- About the same reach
- Wheelbase
- +6 mm
- Longer: steadier at speed
- Head angle
- −0.4°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Checkpoint ALR Women's numbers we have for size 49 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Checkpoint ALR Women's 49 | Trek Boone Disc 50 | Difference |
|---|---|---|---|
| Reach | 373 | 375 | +2 mm |
| Stack | 532 | 534 | +2 mm |
| Head tube angle | 71.4° | 71.0° | −0.4° |
| Effective top tube | 515 | 518 | +3 mm |
| Chainstay length | 425 | 425 | ±0 mm |
| Wheelbase | 995 | 1001 | +6 mm |
| BB drop | 78 | 70 | −8 mm |
| Standover | 749 | 747 | −2 mm |
| Seat tube length | 490 | 476 | −14 mm |
| Head tube length | 90 | 110 | +20 mm |
Differences are the Trek Boone Disc minus the Trek Checkpoint ALR Women's. Full charts: 2019 Trek Checkpoint ALR Women's, 2021 Trek Boone Disc.
Where each sits in its class
Trek Checkpoint ALR Women'sTrek 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 | Trek Checkpoint ALR Women'sALR 4 Women's | Trek Boone Disc6 Disc |
|---|---|---|
| Frame | Trek Alpha | Trek OCLV |
| Fork | Trek Checkpoint | Trek IsoSpeed Cross |
| Shifter | Shimano RS405 | Shimano GRX RX810 |
| Derailleur | Shimano Tiagra | Shimano GRX RX810 |
| Cassette | Shimano Tiagra | Shimano Ultegra HG800-11 |
| Chain | KMC X10 | Shimano Ultegra HG701 |
| Crankset | Shimano Tiagra | Shimano GRX RX810 |
| Tire | Bontrager GR1 Comp | Bontrager CX3 Team Issue |
| Brake | Shimano RS505 | Shimano GRX |
| Handlebar | Bontrager RL IsoZone VR-CF | Bontrager Elite IsoZone VR-CF |
| Seatpost | Bontrager Approved | Bontrager Seatmast Cap |
| Saddle | Bontrager Ajna | Bontrager P3 Verse |
| Bottom bracket | not listed | Trek BB90 |
| Wheelset | not listed | Bontrager Paradigm Comp 25 |
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