Fork Cup Kits & Internal Fork Stop Kits for Big Twin & Sportsters All of the kits include the fork cups, bearing races, bearings and dust shields. NOTE: manufacturer delay on some part #s in this category. A delay in material arrival for machining. 3-4 week lead time. Part#s BIG TWINS 142 Stock replacement fork cups with bearing races ONLY 142-1 Stock replacement fork cup kit 142-1FS Stock replacement fork cup kit with hidden internal fork stops for frames without molded-in neck cups 142FS Replacement disc and pins for Paughco #142-1FS SPORTSTERS 142-1SP Stock replacement fork cups with Timken bearing races ONLY(OEM 48310-78) 142SP Timken bearing fork cup kit for 1978–1981 models (can also be installed on 1954–1977 models with minor modifications.... see note) 142-2FS Timken bearing fork cup kit with hidden internal fork stops for frames without molded-in neck cups 142FS Replacement disc and pins for Paughco #142-2FS Special Note for Paughco #142SP :Requires 3-4 thousands of press-fit. On all early Sportster and 45"models, the fork neck ball bearing set has a lower bearing guard that needsto be removed. It can be ground off or cut off . The neck stem measures7/8" O.D. at the top, but the O.D. is 15/16" at the bott om, so it needsto be either ground down to accept a 7/8" I.D. Timken bearing , or shimmedinside the wall of the bearing to accept a 1" I.D. Timken bearing .