4ZA Cirrus Pro Carbon Integrated Handlebar & Stem

The 4ZA Cirrus Pro Carbon Integrated Bar and Stem blends cutting-edge engineering with sleek Italian design to deliver exceptional performance for competitive cyclists. Crafted by Ursus for the Belgian 4ZA brand, this integrated system is designed specifically for the Ridley line of bikes, offering a perfect combination of aerodynamic efficiency, stiffness, and ultra-lightweight construction.

At just 333g, it’s one of the lightest integrated bar and stem units available, engineered for maximum power transfer while minimizing drag. Its UD (UniDirectional) carbon fiber construction ensures superior strength without sacrificing weight. Fully UCI 3:1 compliant, the Cirrus Pro is race-ready and equipped with integrated cable routing to keep your cockpit clean and aerodynamic.

Key Features:

• Ultra-Light Design: Weighs only 333g for unmatched performance.

• High-Grade UD Carbon: Superior stiffness, durability, and aerodynamic efficiency.

• Integrated Cable Routing: Keeps cables hidden for reduced drag and a sleek appearance.

• Computer Mount Compatibility: Underside fittings allow out-front computer mount installation.

• Race-Ready Compliance: Fully UCI 3:1 compliant for competition use.

Specifications:

• Material: UD Carbon

• Stem Clamp Diameter: 31.8mm

• Reach: 70mm

• Drop: 128mm

• Weight (Approx.): 333g

The 4ZA Cirrus Pro Carbon Integrated Bar and Stem — engineered for speed, designed for performance, built for champions.