The Ritchey WCS Headset Lower Ext Cup EC44|40 1.5in Black is a precision-machined headset component engineered for riders who demand smooth steering performance and long-term durability from their front end. Designed for external cup headset systems using an EC44/40 lower interface and a 1.5-inch fork steerer, this component brings Ritchey’s WCS-level craftsmanship to both performance builds and high-quality replacements.

The lower external cup provides the foundation for the lower headset bearing, ensuring accurate alignment and consistent rotational movement under load. Proper fit at this interface is critical to maintaining stable handling, especially during hard braking, high-speed descents, and out-of-saddle efforts. Ritchey’s tight machining tolerances help minimize play while promoting smooth, predictable steering.

Finished in a durable black anodizing, the lower cup resists corrosion and wear from moisture, sweat, and environmental exposure. The clean finish integrates seamlessly with a wide range of frame designs while maintaining a professional, understated appearance. Built from lightweight yet robust materials, it balances strength and longevity without unnecessary weight.... Read More