G-air is more than just a gravel bike. It is a versatile bike built for the toughest terrain with a short-travel suspension fork and precise handling thanks to a thru-axle frame and fork. Powered by the GRX-400 system, it’s designed to fuel your adventurous spirit on every ride.

Break through
Designed for long-distance trips with a touch of off-road terrains
Mountain trails with switchbacks, gravel roads, forest paths and light off-road sections

More comfort and capability with the Welt G-Air gravel bike and its air suspension fork - perfect for rough and challenging roads.
The fork’s lockout feature helps you ride more efficiently on smooth surfaces, while the Shimano GRX 400 2x10 drivetrain gives you the range to tackle any climb.
Built with a 6061 aluminum frame featuring internal cable routing and smoothed welds, G-Air offers dialed-in geometry for optimal performance - wherever the road (or trail) takes you.
Whether you're new to gravel riding or looking to upgrade your current setup, G-Air strikes the perfect balance between comfort, control, and versatility. Its stable handling and wide tire clearance make it ideal for everything from weekend adventures to daily commutes on mixed terrain.
Choosing the right gravel bike is all about matching your goals with the right components - and the Welt G-Air is built to go the distance. From forest trails to paved paths and backroads, it's ready for wherever your ride leads.
Smooth and reliable shifting, no matter the trailEquipped with Shimano GRX-400 2x10 drivetrain, the Welt G-Air delivers precise gear changes and a wide range of speeds to conquer everything from steep climbs to fast flats. Whether you’re tackling gravel paths or rough roads, you’ll ride with confidence and control every time.
Wider tire compatibilityNow you can fit tires up to 45 mm wide
More comfort – less fatigueThe aluminum frame geometry is designed for comfortable long-distance rides, providing high responsiveness throughout your journey.
Efficient braking performanceG-air is equipped with Shimano GRX Hydraulic brakes (BR-RX400), delivering powerful and reliable stopping power for confident control on varied terrain. Designed for active exploration, these hydraulic brakes ensure optimal performance and safety as you tackle new routes and challenging conditions.
40 mm suspension forkExperience greater versatility and comfort with G-air’s reliable spring-elastomer suspension fork, offering 40 mm of travel. This enhanced shock absorption improves your ability to tackle rough terrain and challenging off-road conditions, helping you stay confident and focused on reaching your goals.
Shine even in the toughest conditionsG-air features seamless joints on the main frame tubes and internal cable routing to protect components and maintain a clean look. Hollow axle wheel mounts add stiffness and durability, while the carbon fork enhances comfort and reduces overall bike weight-making it ready to tackle challenging terrain with confidence.
For those who thrive on adventures with long climbs and controlled descents - in any conditions, on any surface.
*Technical characteristics given for information only, subject to modification *Photos are non-binding

Frame size letter | M | L |
Wheel size | 700с | 700с |
A — Seat tube height (mm) | 500 | 530 |
B - Effective top tube (mm) | 576 | 588 |
C - Chain stay length (mm) | 440 | 440 |
D - Head tube angle (degree) | 71,75 | 71,75 |
E - Seat tube angle (degree) | 73,5 | 73,5 |
F - Bottom bracket drop (mm) | 80 | 80 |
G - Head tube lenght (mm) | 180 | 200 |
H - Reach (mm) | 616 | 636 |
I - Stack (mm) | 393 | 400 |
J - Wheelbase (mm) | 1053 | 1066 |