Listed drivetrain / rear derailleur: Shimano 105 R7100 12-Speed.
Listed bottom bracket: BSA Threaded, 24mm.
Confirm replacement component standards, tire clearance and the actual build with Go Grava before changing wheels, tires, drivetrain or cockpit parts.
The threaded BSA bottom bracket simplifies service and reduces long-term maintenance issues compared to press-fit systems. Shimano 105 components are widely available and serviceable. The included power meter removes the need for a costly upgrade and integrates directly into training apps.
- Ideal for riders entering structured training (power-based riding)
- Strong option for endurance riding, group rides, and climbing routes
- Comfort-focused geometry with modern tire clearance
- Great value platform for long-term ownership without immediate upgrades
Good Fit:
- Riders looking for a complete road bike with modern 12-speed drivetrain
- Endurance and fitness riders needing wide gearing (11-34T)
- Riders wanting integrated power meter without aftermarket upgrades
- Mixed road conditions (32c tire clearance improves comfort and control)
Not A Fit:
- Riders seeking ultra-lightweight carbon race bikes
- Electronic shifting setups (this is mechanical 105 12-speed)
- Riders needing deep aero carbon wheels out of the box
This is a modern alloy performance platform with real-world upgrades already installed—no immediate component swaps required.
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. Measurements are shown in cm and mm.
X-LAB RS5 — Sizing
| Size | Rider height (cm) | Stack (mm) | Reach (mm) |
|---|
| XS | 148.0–158.0 | 530.0 | 371.0 |
|---|
| S | 158.0–168.0 | 553.0 | 375.0 |
|---|
| M | 168.0–176.0 | 575.0 | 381.0 |
|---|
| L | 176.0–183.0 | 599.0 | 387.0 |
|---|
| XL | 183.0–191.0 | 623.0 | 394.0 |
|---|
