Aluminum. Like our original design, the shift throw distance and shift knob height are independently adjustable and both can easily be adjusted with the shifter installed in the vehicle.

Steel socket head screws are set in a counter bore for a flush mount and provide clamping force to firmly hold the upper and lower slider shafts in place. This design allows easy independent adjustment of shift knob height and shifter throw length, while being strong enough to stand up to rowing through the gears with extreme enthusiasm.

Compatible with the factory shift knob or any aftermarket knobs designed to replace the factory unit.

-Knob Height - 1" higher to 1" lower
-Throw - 10% longer to 25% shorter after cutting the trim ring

This is for cars with the factory shifter. You can tell if your car has the factory shifter by pulling down your factory shift boot, and looking at the color of the lever. If it is gold zinc plated lever, then you have the STI option installed. If it is a dark gray, then it is the stock assembly.