UUC Z4 Transmission Product Range

Now with 30% off as part of Regal Autosport's UUC Sale!

UUC DSSR - Double Shear Selector Rod - Z4 2.5/3.0
While producing a "short" shifter, our more important goal in improving the BMW shifter assembly is to increase the precision and smoothness of the overall operation.

The problem.

One significant wear area that has never been addressed previously is the wear and ovalization of the linkage connection points at the transmission and the shifter's lower pivot.

In the original BMW design, the connection at both ends has a large injection-molded plastic bushing. We already know how badly plastic wears in an automotive application, and these areas are not an exception. The design of the selector rod has a pin at 90° to the main rod, which exerts a tremendous amount of leveraged force on the selector joint bushing from one side (known as a single shear force). The result is a steady deformation of the bushing, resulting in looseness and slop in the entire mechanism.

The cure.

A temporary fix is to simply replace the selector joint. Unfortunately, this is only a temporary fix as the new joint's bushing will exhibit the same rapid deformation. To permanently fix this, a change in the fundamental design of the pivot is required, changing the assembly to a double shear system with the UUC Double Shear Selector Rod (DSSR)

The DSSR redistributes the torsional forces from the pin/bushing interface to the complete face area on both sides of the selector joint. By taking advantage of the strength of steel in the DSSR and the body of the joint, the problem of deformation is eliminated and the movement of the selector rod correlates directly to movement of the selector joint - the only "free play" movement remaining in the shifter assembly is from within the transmission itself. In-gear "free play" is reduced to approximately 10mm total when used with a UUC EVO3 shifter.

PLEASE NOTE : discount is applied at checkout. price displayed on website is LESS the 30% discount!

Price: £105.18 (Including VAT at 20%)

Now with 30% off as part of Regal Autosport's UUC Sale!

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