A projecting portion 52 which becomes convex in radial direction is formed in a rubber elastic body 5 for connecting together an inner cylindrical body 3 mounted to a shaft portion 21a of a lower shift lever member 21 by external interfit and an outer cylindrical body 4 mounted to a cylindrical portion 22a of an upper shift lever member 22 by internal interfit. Formed in an inner peripheral surface of the outer cylindrical body 4 is a recessed portion 42 which becomes concave with clearances C1 and C2 of respective given amounts left between the recessed portion 42 and the projecting portion 52. This makes it possible to manufacture a shift lever bush 1 having a two-stage spring characteristic at low cost.

A shift lever gripped by a driver for operating the transmission of a vehicle is inserted into a hole of a lever holder. The lever holder is axially supported to the vehicle so as to transmit the operation of the shift lever to the transmission. A plurality of ribs are projected into the holes and when a heavy load acts in the axial direction of the shift lever, the shift lever moves to break the rib. Accordingly, the axial direction load of the shift lever is absorbed.

A vibration-reducing control lever assembly which in one form comprises a knob, an elastomeric isolator coupled to the knob, and a lever coupled to the elastomeric isolator. The isolator acts as an intermediary between the lever and the knob and reduces vibrations transmitted from the lever to the knob. Thus, the knob is isolated from, rather than directly connected to, the lever. Alternative embodiments include a lever-receiving insert, one or more internal passageways which bypass the elastomeric isolator and a detachable hollow skirt. In some embodiments, the elastomeric isolator is captured and compressed by an isolator receiver.

A manual shift lever connection mechanism for connecting a shift handle to the stub shaft of a transmission. The connection mechanism has a sleeve portion disposed about said stub shaft and an insert member for engaging the stub shaft disposed within said sleeve portion. The insert member further has an engagement mechanism for engaging a disassembly tool.

A mechanical attachment for a two-stage, bi-directional shift lever vibration isolator. A shift lever has a sleeve which receives thereinside a lever vibration isolator which includes a damping body having an outer surface characterized by an hour-glass cross-section; an attachment housing within the damping body; and upper and lower washers connected to the housing. An attachment bore passes laterally through the housing and is lined by a layer of the damping body. The attachment bore is disposed in the center of recessed surfaces of the hour-glass cross-section. An attachment pin passes through the attachment bore and the sleeve. The shift lever vibration isolator is freely slidable on the attachment pin, facilitated by a clearance between the attachment pin and the bore lining layer.