The 9000-Series hydraulic release bearings (HRBs) are designed for 2-bolt pattern applications, often in situation where use of a 5/8” master cylinder (such as in many OE production vehicles) and a 7.25” clutch is desired. The bearings mount onto transmission or bellhousing, typically with an adapter.
With 4 bearing options and a wide range of available piston heights, the Tilton 9000-Series HRBs are an excellent choice.