Enduro Bearings Bearing Enduro ACB 3645 CC SXD - XD-15 Ceramic Angular Contact

ACB 3645 CC SXD - 1-1/8" Angled Contact Headset Bearing (30.2mm x 41mm x 6.5mm: 36x45 deg), Internal Headset Bearing with XD15 Balls and Bushings for Lifetime Corrosion ResistanceThe last headset bearing you'll ever install on your bike. These XD15 bearings are virtually identical in performance and corrosion resistance to our XD15 Ceramic-hybrid bearings used for hubs and bottom brackets, but with XD15 balls that work better in the more abusive steering environment. The mechanical properties of XD15 stainless steel balls provide a higher level of impact resistance than ceramic balls for headset applications. Bearings tested at enduro with XD15 balls and bushings have been used in salt water for months without any corrosion, there is simply nothing comparable on the market. This bearing size is also known in the bicycle industry by the following part numbers: 27287-1046-004, HSS 20130K, TH-873E, MR-122The Enduro line of angular contact headset bearings starts with black oxide treated chrome steel bushings, rises to 440C stainless steel, and the top of the line is XD15 aerospace stainless steel (bushings and balls), guaranteed for life. They are always designed with the largest balls possible, feature double-lip seals set in a micro groove (labyrinth), and are filled with 90% waterproof high-pressure grease for ultimate protection against sweat and the elements. Enduro angular contact (A/C) bearings are designed so that all balls are evenly engaged to distribute force over a larger area, minimizing wear and maximizing life.