In order to fit behind a thick stock clutch the 82870 hydraulic throw out bearing is made much smaller than the racing version. Installs by replacing one bolt from the front of the transmission. Conical shims are provided to properly fit the bearing to zero clearance. Made to work with Saginaw,T-10, Muncie and Jerico Transmissions. Compressed thickness is 1.652" and 2.441" when extended, giving .789" of travel.