Bicycle Headset Star Nuts

Secure your front-end assembly and set accurate headset bearing tension with our Bicycle Headset Star Nuts collection. Designed for installation inside traditional alloy and chromoly steel fork steerer tubes, these double-flanged star-shaped nuts bite directly into the inner steerer walls to create an immovable threaded anchor point. Choose from standard 1-1/8" replacement star nuts engineered with M6 internal threading for universal threadless stem setups, 1" star nuts tailored for vintage or narrow steerer forks, or heavy-duty star nut and top cap sets complete with lightweight alloy top caps and stainless steel tension bolts. Manufactured from hardened spring steel with rust-resistant black-oxide or zinc coatings, these star nuts ensure reliable, slip-free preloading across all riding conditions.