Also known as neck post bearing. These Genuine Timken bearings are stock equipment in all Big Twin 1960 to present (except Touring & Trike 2014 to present), Sportster 1982 to present, V-Rod 2002-2017, Street 2015 to present and all Buell thru 2002. Sold in sets of bearing and outer race, fits upper and lower bearing cup. Order 2 for 1 motorcycle.