Billet B8/8.5 Linkage Reinforcement Kit JXB Performance

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Transform your sloppy OEM shift linkage into a precision instrument for perfect shifts.

Everybody knows the stock linkage sucks. It doesn’t perform well, it sucks to swap out, and it’s expensive to replace. After an in-depth look at it, we came to the conclusion that it wasn’t all bad. There are plenty of good parts in it. The rod that runs from the shift lever to the crossrod is rigid as can be. The plastic coupling that holds the socket for the lower ball joint and the ball for the upper ball joint is very well-made. It has thick reinforcement ribs and doesn’t flex at all under load.

Where the wheels start to fall off is when we look at the ball joints and the crossrod. The lower ball joint in particular is housed in a flexible plastic and rubber socket that squishes and flexes under load. The plastic crossrod is flexible as can be. It flexes a great amount under load, leading to getting stuck in the reverse track more easily on the 1-2 shift, and generally adding slop to the shift pattern. The crossrod bushing is also fairly soft and can be seen flexing. We replaced that with a stiff polyurethane bushing held in place with a precision stainless shoulder bolt for a perfect no-slop no-flex interface. Though also plastic, the upper ball joint isn’t too bad, but since we’re addressing the crossrod, we decided to beef it up while we’re in there.

So instead of replacing the whole linkage, this kit transforms the stock linkage by replacing the 2 ball joint cups, the crossrod, and the crossrod bushing/bolt.

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