2025 3T Exploro Ultra 700c vs 2027 Trek Checkpoint ALR Gen 3
The XS is the Trek Checkpoint ALR Gen 3 size closest to your 51 3T Exploro Ultra 700c. 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 Gen 3
Compared with the 3T Exploro Ultra 700c in 51, the Trek Checkpoint ALR Gen 3 in XS places the top of the head tube 3 mm higher and 18 mm further forward, relative to the bottom bracket.
- Frame stack
- +3 mm
- Higher front end
- Frame reach
- +18 mm
- Longer frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- +1.7°
- Steeper: sharper steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
We can't draw these frames yet. The 3T Exploro Ultra 700c numbers we have for size 51 are missing the seat angle, chainstay length and wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | 3T Exploro Ultra 700c 51 | Trek Checkpoint ALR Gen 3 XS | Difference |
|---|---|---|---|
| Reach | 362 | 380 | +18 mm |
| Stack | 542 | 545 | +3 mm |
| Head tube angle | 69.5 | 71.2° | +1.7° |
| BB drop | 79 | 78 | −1 mm |
| Fork length | 375 | not listed | |
| Head tube length | 142 | 96 | −46 mm |
| Effective top tube | not listed | 536 | |
| Chainstay length | not listed | 435 | |
| Wheelbase | not listed | 1025 | |
| Standover | not listed | 735 | |
| Seat tube length | not listed | 445 |
Differences are the Trek Checkpoint ALR Gen 3 minus the 3T Exploro Ultra 700c. Full charts: 2025 3T Exploro Ultra 700c, 2027 Trek Checkpoint ALR Gen 3.
Where each sits in its class
3T Exploro Ultra 700cTrek Checkpoint ALR Gen 3
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 | 3T Exploro Ultra 700cGRX 1X12 700c | Trek Checkpoint ALR Gen 3ALR 3 Gen 3 |
|---|---|---|
| Frame | 3T Exploro Ultra | not listed |
| Fork | Fango Ultra | Trek Checkpoint |
| Shifter | Shimano GRX Di2 | Shimano CUES 10 |
| Derailleur | Shimano GRX Di2 | Shimano CUES U6000 GS |
| Cassette | Shimano XT M8100 | Shimano CUES LG300 |
| Crankset | Shimano GRX FC-RX600 | Shimano CUES U60301 |
| Wheelset | Fulcrum Rapid 900 | not listed |
| Tire | variable | Bontrager Girona Comp |
| Brake | Shimano GRX Di2 | Tektro C550 |
| Handlebar | 3T variable | Bontrager Elite Gravel |
| Stem | 3T Apto Stealth | not listed |
| Seatpost | 3T round | not listed |
| Saddle | variable | Trek Verse |
| Chain | not listed | Shimano LG500 |
| Rim | not listed | Bontrager Paradigm 23 |
| Rotor | not listed | Tektro centerlock |
| Headset | not listed | Bontrager Expander Plug |
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