Using the Billetworkz Short Throw Shift Kit is straightforward. First, make sure your car is a 2015 - 2024 Subaru WRX (be aware that 2022 - 2024 models might need some modifications). Start by installing the short throw shifter. You can choose the color of the reverse lockout according to your preference. The shifter rod is made of 304 Stainless Steel, so it's durable. Remember to lubricate the o - rings in the reverse lockout assembly with 3 - in - 1 oil to stop rattling. Next, install the shifter stop. Adjust it so that it limits the lateral movement in 1st and 2nd gear, giving you a more precise shift feel. Then, replace the factory shifter plate with the one included in the kit. This plate shortens the shift throw and is slightly heavier to balance it. Finally, swap the factory rubber bushing in the shift cable with the brass shifter bushing. This will reduce shifter slop. For maintenance, regularly check the o - rings and re - lubricate them as needed. Also, make sure all the parts are tightly installed. If you notice any rattling or slop, double - check the installation and adjustments.