Don't want to switch to a custom shifter, but still want tap shift with your 6L80 / 6L90 swap project? That's OK! The 6L80 / 6L90 will operate with any aftermarket or OE shifter. Just add our switch box to allow for tap up/tap down shifting capability. The switch can be mounted any place that's convenient for you.

Requires E38 ECM / T43 TCM reprogramming for proper operation with 6L80 / 6L90 setups (we do that - just give us a call!) and is not compatible with E67 setups!


Add pigtail? Select "Yes" if you're not using a Speartech swap harness with the tap shift plug built into the harness.


If using this for a Twist Machines Shrifter, you must select "Yes" to "For use with Twist Machines Shrifter" You do not need to select Yes to Add Pigtail!


If you don't have a Speartech harness with the tap shift plug on it, please see here for wiring info (6L80/6L90 only).