Follow your own route, wherever it may lead. With stable flat bar positioning and disc brakes, Roam Disc handles all types of terrain and unlimited adventures.
Key Performance Factors
Agility and control
Updated flat-bar frame geometry puts the rider in a position that balances efficiency with stability, and disc brakes give you added control on rugged roads or dirt.
Smooth-riding comfort
The D-Fuse seatpost and suspension fork absorb road shocks and vibrations.
Integrated rack mounts
Compatible with rear racks, allowing easy cargo capacity for daily trips or longer treks.
Techs & Features
The proprietary “D” shaped composite seatpost damps vibration, resulting in a smooth, compliant ride.
Sizing Guide and Geometry
Sizing to be used as a reference only. Please check with a local authorized dealer to determine the correct size.
Available sizes may vary from country to country.
- S
- 160 cm5’3”
170 cm5’7”
- M
- 170 cm5’7” 180 cm5’11”
- L
- 180 cm5’11” 190 cm6’3”
- XL
- 190 cm6’3” 200 cm6’7”
| S | M | L | XL | ||
|---|---|---|---|---|---|
| A | Seat Tube Length (mm) (inch) | 42016.5 | 46018.1 | 50019.7 | 55021.7 |
| B | Seat Tube Angle (degrees) | 73.0° | 73.0° | 73.0° | 73.0° |
| C | Top Tube Length (mm) (inch) | 59023.2 | 60023.6 | 61024 | 62524.6 |
| D | Head Tube Length (mm) (inch) | 1154.5 | 1305.1 | 1455.7 | 1606.3 |
| E | Head Tube Angle (degrees) | 70.5° | 70.5° | 70.5° | 70.5° |
| F | Fork Rake (mm) (inch) | 421.7 | 421.7 | 421.7 | 421.7 |
| G | Trail (mm) (inch) | 853.3 | 853.3 | 853.3 | 853.3 |
| H | Wheelbase (mm) (inch) | 108842.8 | 109843.2 | 110943.7 | 112544.3 |
| I | Chain Stay Length (mm) (inch) | 45017.7 | 45017.7 | 45017.7 | 45017.7 |
| J | Bottom Bracket Drop (mm) (inch) | 622.4 | 622.4 | 622.4 | 622.4 |
| K | Stack (mm) (inch) | 60623.9 | 62024.4 | 63425 | 64825.5 |
| L | Reach (mm) (inch) | 40415.9 | 41016.1 | 41616.4 | 42716.8 |
| M | Stand Over Height (mm) (inch) | 72528.5 | 75629.8 | 78831 | 82732.6 |
| N | Handlebar Width (mm) (inch) | 64025.2 | 68026.8 | 68026.8 | 68026.8 |
| O | Stem Length (mm) (inch) | 702.8 | 803.1 | 903.5 | 1003.9 |
| P | Crank Length (mm) (inch) | 1706.7 | 1706.7 | 1756.9 | 1756.9 |
| Q | Wheel Size | 700C | 700C | 700C | 700C |
Every effort has been made to ensure accuracy throughout this website. However, Giant reserves the right to change bike specifications, features, prices and colours without prior notice.