The Ritchey Fit Headset Ext Cup EC30|25.4 Threaded 1in is a precision-machined headset component designed for frames with external cup headset systems and a threaded 1-inch fork steerer. Engineered to provide a reliable seating surface for the lower headset bearing, this external cup helps ensure smooth steering performance, accurate alignment, and dependable durability — all essential for confident handling on road, cyclocross, or light gravel rides.

Crafted with Ritchey’s attention to detail and quality, the Fit headset external cup features precise tolerances that promote proper headset geometry and minimize unwanted play over time. Its robust construction stands up to repeated use and the stresses of daily riding, while the black finish offers corrosion resistance and a clean visual match with a variety of frame styles.

The correct installation of this threaded lower external cup is key to achieving consistent bearing operation and steering feel. By maintaining proper alignment of the bearing within the head tube, it reduces friction and supports reliable performance ride after ride. Whether you’re building a new bike, servicing an existing headset, or upgrading worn components, this external cup delivers dependable front-end performance where it matters most.