The Blackbearing D4 Headset Bearing is meticulously crafted to deliver exceptional steering performance for cyclists. Designed to replace original bearings, it ensures a smooth and responsive ride, enhancing your overall cycling experience.

Built with Premium Materials: Constructed using SAE52100 chrome steel for both balls and rings, the D4 headset bearing offers unmatched durability and strength. Its premium-quality grease and specific joints contribute to long-lasting performance, even under demanding conditions.

Perfect Fit and Compatibility: With dimensions of 40 x 52 x 12 mm and a 45/45° angular contact design, this bearing is perfectly suited for 1"1/2 fork steerers. It ensures precise alignment and smooth rotation, making it an ideal upgrade or replacement for your bike.

Versatile and Reliable Replacement: The Blackbearing D4 is compatible with leading brands like FSA, Stronglight, Cane Creek, Acros, and Ritchey. Its versatile design makes it a reliable choice for a wide range of cycling setups.

Whether you’re navigating challenging trails or enjoying a smooth road ride, this bearing ensures a seamless and reliable performance.

Features

• Tailored Fit: Designed for 1"-1/2 fork steerers with 40 x 52 x 12 mm dimensions, ensuring precise alignment and compatibility with top brands like FSA, Stronglight, Cane Creek, Acros, and Ritchey.
• Durable Chrome Steel: SAE52100 Chrome Steel construction ensures strength, wear resistance, and long-lasting performance.
• Enhanced Control: Angular contact design handles radial and axial loads for balanced and responsive steering.
• Effortless Operation: Premium grease minimizes friction, providing consistent and smooth rotation.

Specifications

• Bearing Type: Cartridge
• Dimensions: 40 x 52 x 12 mm
• Material: Chrome Steel
• Inner Diameter: 40 mm
• Outer Diameter: 52 mm
• Thickness: 12 mm
• Chamfer: 45/45°
• For: 1"-1/2 Fork Steerer