Cycling enthusiasts, this Campagnolo hub service kit is exactly what you need for maintaining those high-end wheels! This is the genuine Campagnolo part (HB-RE100) designed specifically for servicing one hub with oversized 17mm axles. It works for both front and rear hubs, and it's compatible with some seriously premium wheels: Hyperon, Eurus, Zonda C17, and Neutron models from 2008 onward. The kit includes quality sealed bearings that Campagnolo is famous for - no cheap substitutes here. If you're experiencing rough spinning, play in your hubs, or just doing routine maintenance, this kit has everything you need for one wheel. Installation requires some mechanical know-how, but for serious cyclists who maintain their own equipment, this is essential. Keeping your hubs properly serviced means smoother rolling, better power transfer, and longer component life. Always check Campagnolo's technical documents for specific compatibility, but if you've got one of these high-performance wheelsets, this is the official solution for keeping them running like new. Perfect for bike shops or serious home mechanics!