OPEN Upper-Concept

The OPEN Upper-Concept is a high-performance carbon gravel bike frame designed for versatile riding across mixed terrain. Suitable for cyclists seeking a lightweight and responsive platform, it accommodates both road and off-road use. The frame is engineered by OPEN, a brand recognized for innovative gravel and adventure bike designs.

• Constructed from high-modulus carbon fiber for reduced weight and increased stiffness
• Compatible with both 700c and 650b wheel sizes
• Clearance for wide tires, typically up to 700x40mm or 650x47mm
• Flat mount disc brake standard for improved braking performance
• Internal cable routing for a clean appearance and protection from debris
• Threaded bottom bracket for ease of maintenance
• Multiple mounting points for bottles and accessories
• Tapered head tube for enhanced front-end stiffness
• Designed for 1x or 2x drivetrain compatibility

Technical Note: The OPEN Upper-Concept frame is optimized for gravel and adventure cycling, offering a balance between low weight and durability. It is compatible with a range of drivetrain and wheel configurations to suit different riding preferences.

Available Variants: