2025 Rivendell Atlantis vs 2025 3T Exploro Ultra 700c
The 61 is the 3T Exploro Ultra 700c size closest to your 55 Rivendell Atlantis. 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 3T Exploro Ultra 700c
Compared with the Rivendell Atlantis in 55, the 3T Exploro Ultra 700c in 61 places the top of the head tube 15 mm higher and 8 mm further back, relative to the bottom bracket.
- Frame stack
- +15 mm
- Higher front end
- Frame reach
- −8 mm
- Shorter frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- +2.5°
- 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 Rivendell Atlantis numbers we have for size 55 are missing the chainstay length and wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Rivendell Atlantis 55 | 3T Exploro Ultra 700c 61 | Difference |
|---|---|---|---|
| Reach | 407 | 399 | −8 mm |
| Stack | 617 | 632 | +15 mm |
| Head tube angle | 70 | 72.5 | +2.5° |
| Seat tube angle | 72 | not listed | |
| Effective top tube | not listed | not listed | |
| BB drop | 80 | 75 | −5 mm |
| Standover | not listed | not listed | |
| Seat tube length | 550 | not listed | |
| Fork length | not listed | 375 | |
| Head tube length | not listed | 225 |
Differences are the 3T Exploro Ultra 700c minus the Rivendell Atlantis. Full charts: 2025 Rivendell Atlantis, 2025 3T Exploro Ultra 700c.
Where each sits in its class
Rivendell Atlantis3T Exploro Ultra 700c
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 | Rivendell AtlantisAtlantis | 3T Exploro Ultra 700cGRX 1X12 700c |
|---|---|---|
| Frame | Rivendell Atlantis | 3T Exploro Ultra |
| Fork | threaded | Fango Ultra |
| Shifter | not listed | Shimano GRX Di2 |
| Derailleur | not listed | Shimano GRX Di2 |
| Cassette | not listed | Shimano XT M8100 |
| Crankset | not listed | Shimano GRX FC-RX600 |
| Wheelset | not listed | Fulcrum Rapid 900 |
| Tire | not listed | variable |
| Brake | not listed | Shimano GRX Di2 |
| Handlebar | not listed | 3T variable |
| Stem | not listed | 3T Apto Stealth |
| Seatpost | not listed | 3T round |
| Saddle | not listed | variable |
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