2025 3T Exploro Ultra 700c vs 2025 Marin Gestalt Base
The 54 is the Marin Gestalt Base size closest to your 56 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 Marin Gestalt Base
Compared with the 3T Exploro Ultra 700c in 56, the Marin Gestalt Base in 54 places the top of the head tube at about the same height and 4 mm further back, relative to the bottom bracket.
- Frame stack
- −2 mm
- About the same height
- Frame reach
- −4 mm
- Shorter frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −0.5°
- Slacker: calmer 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 56 are missing the seat angle, chainstay length and wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | 3T Exploro Ultra 700c 56 | Marin Gestalt Base 54 | Difference |
|---|---|---|---|
| Reach | 381 | 377 | −4 mm |
| Stack | 584 | 582 | −2 mm |
| Head tube angle | 72 | 71.5 | −0.5° |
| BB drop | 77 | 78 | +1 mm |
| Fork length | 375 | not listed | |
| Head tube length | 175 | not listed | |
| Seat tube angle | not listed | 73.5 | |
| Effective top tube | not listed | 550 | |
| Chainstay length | not listed | 432 | |
| Wheelbase | not listed | 1024 | |
| Standover | not listed | 755 | |
| Seat tube length | not listed | 500 |
Differences are the Marin Gestalt Base minus the 3T Exploro Ultra 700c. Full charts: 2025 3T Exploro Ultra 700c, 2025 Marin Gestalt Base.
Where each sits in its class
3T Exploro Ultra 700cMarin Gestalt Base
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 | Marin Gestalt BaseBase |
|---|---|---|
| Frame | 3T Exploro Ultra | Marin Gestalt |
| Fork | Fango Ultra | 6061 Aluminum, Straight-Blade, Post-Mount Disc |
| Shifter | Shimano GRX Di2 | Shimano Claris |
| Derailleur | Shimano GRX Di2 | Shimano Claris |
| Cassette | Shimano XT M8100 | SunRace 8-Speed, 11-32T |
| Crankset | Shimano GRX FC-RX600 | FSA Tempo |
| Wheelset | Fulcrum Rapid 900 | Marin Aluminum Double Wall, 21mm Inner, 22mm Tall |
| Tire | variable | WTB Exposure Comp |
| Brake | Shimano GRX Di2 | Tektro MD-C400 |
| Handlebar | 3T variable | Marin Butted Alloy, Compact 16º Flared Drop |
| Stem | 3T Apto Stealth | not listed |
| Seatpost | 3T round | Marin Alloy, 27.2mm |
| Saddle | variable | Marin Beyond Road Concept Elite |
| Chain | not listed | KMC Z8 |
| Bottom bracket | not listed | Sealed Bearing Square Taper |
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