In cycling, the headset is a collection of tubes, rings, bearings (known as races), and seals that fits into your bike frame and holds the top tube of the forks (the fork steerer) in place. It gives ...

The Ultegra threaded headset is compatible with older-style 1in threaded forks. Its self-aligning bearings dispense with the need to 'face' the head-tube on older steel frames with special tools - as ...