Bikes / Bastion / Gravel
Bastion Gravel 2026 Geometry, Reviews, and Specs
No OEM studio shot for this model yet.
Fit and steering
Aggressive fitSlow steeringFast steeringRelaxed fit Bastion Gravel 2026 Sizing Guide
Bastion Gravel 2026 Geometry Chart
| Size | Stack | Reach | Stack/reach | Stem | Bar | Crank | Head tube angle | Seat tube angle | Chainstay | Wheelbase | BB drop | Wheel size |
|---|
| S | 548 mm | 376 mm | 1.46:1 | 90 mm | 400 mm | 170 mm | 70.8° | 73.5° | 426 mm | 1026 mm | 74 mm | 700c |
| M | 568 mm | 386 mm | 1.47:1 | 100 mm | 420 mm | 172.5 mm | 71.2° | 73.5° | 426 mm | 1038 mm | 74 mm | 700c |
| L | 586 mm | 396 mm | 1.48:1 | 110 mm | 440 mm | 175 mm | 71.6° | 73.0° | 426 mm | 1050 mm | 72 mm | 700c |
| XL | 606 mm | 406 mm | 1.49:1 | 110 mm | 440 mm | 175 mm | 71.6° | 72.5° | 428 mm | 1066 mm | 72 mm | 700c |
2026 colorways
No colorway catalog for 2026 yet.
What changed in the bike frame
Same published geometry as 2025.
- Published geometry matches the 2025 Bastion Gravel. Same sizes, same stack and reach.
What changed in equipment
No verified spec sheet for 2026 or 2025.
What changed in price
No launch MSRP in the catalog yet.
Compare 2026 and 2025 Bastion Gravel side by side