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E82 UUC DSSR - Double Sheer Selector Rod

E82 UUC DSSR - Double Sheer Selector Rod Increase the precision and smoothness of ANY and ALL shifters -- stock or aftermarket! Whether you have a factory stock shifter or an aftermarket short shift kit, a UUC Double Shear Selector Rod (DSSR) will dramatically improve it. The shift linkage is one of the most over-looked areas for improvement. Usually parts are replaced only when something breaks. But restoring and improving on the basic design can do wonders for your driving experience and piece of mind.

The original shifter linkage was engineered with costs in mind. It uses a lot of plastic and stamped sheetmetal parts to keep costs low. But they quickly wear out and by 50,000 miles there is considerable slop and play in the shifter action. UUC Motorwerks has attacked this problem with precision engineered replacement parts that perform better and last longer than the original factory pieces. The DSSR replaces the factory loosely-mounted selector rod with a beefier and more robust milled aluminum piece. The DSSR gives you a more precise and direct feel when shifting. Along with a fresh replacement of the other shifter bushings you won't have that flimsy feeling and side-side slop of a stock shifter linkage (even when new). The DSSR is a great upgrade to any short shifter, or even for refreshing your stock shift linkage.
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UUC DSSR for E82/E88 135i Increases the precision and smoothness of ALL shifters -- OE and aftermarket! Whether you have a factory stock shifter or aftermarket short shift kit, a Dual Shear Selector Rod (DSSR) will dramatically improve it. This particular DSSR fits all E82 135i coupe and all E88 135i convertible.

The goal.
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 135i's 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. (see photo at right) The image shows a selector joint that has approximately 25K miles of use.

The looseness and slop are magnified by the leverage-multiplication effect of the shift lever itself. The result is an in-gear shifter "free play" of 3/4" and up to 1" in either direction, over 35mm total.

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.

The original BMW shifter and all other aftermarket shifters (except UUC which uses deformation-free bearings) contain a plastic bushing similar to the selector joint, and the exact same wear and ovalization causes those shifters to get sloppy. The DSSR permanently fixes these shifters also. The DSSR is compatible with all brand shifters, whether original BMW or other-brand aftermarket. When used with the original BMW shifter or other aftermarket shifters, the amount of "free play" will be greatly reduced but varies by shifter (flexation of the shifter shaft contributes to the total "free play" travel).

This UUC DSSR fits the following BMWs:
2008-2010 E82 E88 135i N54 coupe
2011-2014 E82 E88 135i N55 coupe
Please supply us with your VIN so we can ensure you get the correct DSSR.

UUC
Part #: DSSR86-1
Price: $129.95 (USD) 
Ships on Jun 5, 2018
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UUC DSSR for E82 128i, E9X 325i/328i UUC Double Shear Selector Rod - E82 128i, E9X 328i (2007+ E90/E92/E93 328i), and E90 325i (Sedan Only)
Increases the precision and smoothness of ALL shifters -- OE and aftermarket! Whether you have a factory stock shifter or aftermarket short shift kit, this Dual Shear Selector Rod (DSSR) will dramatically improve it.

The goal.
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. (see photo at right) The image shows a selector joint that has approximately 25K miles of use.

The looseness and slop are magnified by the leverage-multiplication effect of the shift lever itself. The result is an in-gear shifter "free play" of 3/4" and up to 1" in either direction, over 35mm total.

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.

The original BMW shifter and all other aftermarket shifters (except UUC which uses deformation-free bearings) contain a plastic bushing similar to the selector joint, and the exact same wear and ovalization causes those shifters to get sloppy. The DSSR permanently fixes these shifters also. The DSSR is compatible with all brand shifters, whether original BMW or other-brand aftermarket. When used with the original BMW shifter or other aftermarket shifters, the amount of "free play" will be greatly reduced but varies by shifter (flexation of the shifter shaft contributes to the total "free play" travel).

This item fits the following BMWs:
2008-2012 E82 BMW 128i
2006-2011 E90 BMW 325i 328i - Sedan - Only for cars produced after 9/2005
2006-2012 E91 BMW 328i - Wagon
2007-2012 E92 BMW 328i - Coupe
2007-2012 E93 BMW 328i - Convertible
UUC
Part #: DSSR177-B
Price: $129.95 (USD) 
Ships on Jun 5, 2018
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