This Torrington full complement roller bearing is more durable as the original INA bearing and is a must for any cam change or service. Bearings are sold in sets of 2. The removal and installation of these inner cam bearings requires the use of Jims' tools Fmc-720487 and Fmc-751094 that can be found in the tool section of this catalog. Fits Twin Cam 1999-2006 with "Silent Chains".