Listed drivetrain / rear derailleur: Shimano 105 Di2 12-Speed.
Listed bottom bracket: T47 Threaded, 29mm.
Confirm replacement component standards, tire clearance and the actual build with Go Grava before changing wheels, tires, drivetrain or cockpit parts.
The T47 threaded bottom bracket provides a more reliable and serviceable interface compared to press-fit systems. Shimano Di2 requires periodic charging but offers consistent, precise shifting with minimal adjustment. Carbon wheels and spokes reduce rotational weight and improve acceleration.
- Ideal for riders moving into high-performance road cycling
- Strong option for racing, fast group rides, and training blocks
- Designed for riders prioritizing speed and efficiency
- Minimal upgrade path—core performance components already included
Good Fit:
- Performance road riders seeking aerodynamic advantage
- Riders wanting electronic shifting without premium brand pricing
- Structured training riders needing built-in power meter
- Fast group rides, racing, and high-speed endurance riding
Not A Fit:
- Riders looking for relaxed upright geometry (race-oriented fit)
- Beginner riders needing high cockpit adjustability
- Riders unwilling to manage Di2 charging and setup
This is a race-oriented carbon platform designed for speed, efficiency, and performance consistency.
Components can vary by production batch; confirm the actual bicycle before selecting replacement parts.
Manufacturer rider-height ranges are a starting point, not a fit guarantee. Confirm your fit with Go Grava, especially between sizes.
X-LAB AD8 — Sizing
| Size | Rider height (cm) | Stack (mm) | Reach (mm) |
|---|
| XS | 150.0–160.0 | 505.0 | 371.0 |
|---|
| S | 160.0–170.0 | 520.0 | 379.0 |
|---|
| M | 170.0–178.0 | 534.0 | 387.0 |
|---|
| L | 178.0–185.0 | 553.0 | 395.0 |
|---|
| XL | 185.0–191.0 | 575.0 | 405.0 |
|---|
