The Ritchey Headset Classic Upper Assembly PF ZS44/28.6 is a reliable and well-engineered component designed to provide smooth, durable steering performance on bikes with a press-fit zero-stack (ZS44) 44 mm headtube and a 28.6 mm fork steer tube. As the upper portion of the headset, this assembly includes precision bearings and cups that support low-friction rotation while handling the loads placed on your steering system — whether you’re cruising, commuting, or charging technical terrain.

This Classic Upper Assembly features sealed cartridge bearings that help resist dirt and moisture, extending service intervals and maintaining consistent steering feel. The design works seamlessly with a matching lower headset and compatible frames, offering straightforward installation and dependable performance over time. The press-fit configuration delivers a clean, integrated look while ensuring the bearings sit securely in the headtube for stable handling and control.

Built with thoughtful materials and machining tolerances, the Ritchey Classic Upper is suitable for a wide range of bikes that use the ZS44/28.6 standard, from road machines to gravel and light-duty off-road builds. It’s a practical choice for riders seeking reliable steering performance and refined feel without excessive weight or complexity.