Nukeproof ZS56 Top Headset AssemblyDeveloped to give riders increased durability and reliable performance on their ride, this top headset assembly features a robust build with a range of enhanced quality features. It is compatible with the bearings from the Nukeproof Steel Bearing or the upgraded Nukeproof Ti coated bearing with stainless balls. Designed to ensure the highest performance for tough and challenging conditions, this model has been engineered with durability and quality in mind.The latest generation of headsets has been revised, improved and expanded for optimum fit, sealing and performance as well as compatibility with a wide range of fork and frame standards. Featuring sealed angular contact bearings, this upper bearing cup which is CNC-machined from proprietary aluminium offers the optimum balance of lightweight, strength and durability for performance across all riding disciplines. Nukeproof has also kitted it out with a hard anodised finish and laser-etched graphics for maximum toughness as well as a sleek appearance.Don’t know which headset you need? No problem! Simply use our Headset Technical Guide which includes a Headset Finder.If you need a top cap and star nut, this can be purchased here.Features: Headset Type: Semi-Integrated Use: Mountain Bike (MTB) Steerer Diameter: 1.1/8" Size: ZS56-28.6 Specific Top Headset cup Replaceable angular contact bearings Laser-etched graphics Hard Anodised Finish Not Included: Top Cap and Star nut not includedBuy Nukeproof Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.