2026 3T Primo vs 2026 3T Primo2 Shimano
The M is the 3T Primo2 Shimano size closest to your M 3T Primo. 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 Primo2 Shimano
Compared with the 3T Primo in M, the 3T Primo2 Shimano in M places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket.
- Frame stack
- ±0 mm
- About the same height
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
We can't draw these frames yet. The 3T Primo numbers we have for size M are missing the chainstay length and wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | 3T Primo M | 3T Primo2 Shimano M | Difference |
|---|---|---|---|
| Reach | 378 | 378 | ±0 mm |
| Stack | 546 | 546 | ±0 mm |
| Head tube angle | 71.1 | 71.1 | ±0.0° |
| Seat tube angle | 72.5 | 72.5 | ±0.0° |
| Effective top tube | 550 | not listed | |
| BB drop | 70 | 70 | ±0 mm |
| Seat tube length | 490 | 490 | ±0 mm |
| Head tube length | 125 | 125 | ±0 mm |
| Chainstay length | not listed | 415 |
Differences are the 3T Primo2 Shimano minus the 3T Primo. Full charts: 2026 3T Primo, 2026 3T Primo2 Shimano.
Where each sits in its class
3T Primo3T Primo2 Shimano
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 PrimoGRX 1X12 | 3T Primo2 ShimanoShimano GRX 1x12 |
|---|---|---|
| Frame | 3T Primo2 | 3T Primo2 |
| Fork | 3T Fango Primo2 | 3T Fango Primo2 |
| Shifter | Shimano GRX RX610 | Shimano GRX RX610 |
| Derailleur | Shimano GRX RX822 SGS | Shimano RD-RX822-SGS GRX |
| Cassette | Shimano Deore M6100 | Shimano Deore M6100 |
| Crankset | Shimano GRX RX610 | Shimano FC-RX610-1 |
| Wheelset | Fulcrum Rapid Red 900 | Fulcrum Rapid Red 900 |
| Tire | Pirelli Cinturato Adventure | Pirelli Cinturato Adventure |
| Brake | Shimano GRX RX400 | Shimano GRX RX400 |
| Rotor | Shimano SM-RT64 | Shimano SM-RT64 |
| Handlebar | 3T Superergo PRO | 3T Superergo PRO |
| Stem | 3T Apto | 3T Apto |
| Seatpost | 3T Primo | 3T Primo |
| Saddle | fizik Vento Argo X5 | fizik Vento Argo X5 |
| Chainring | not listed | Shimano RX610-1 GRX |
| Headset | not listed | Sealed cartridge |
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