Using your GrimmSpeed stubby shift knob is super easy. Just screw it onto your manual Subaru's shifter. If you have a 2002 - 2014 WRX with 5 - speed, don't forget to buy the shift boot retainer separately and install it as well. When it comes to maintenance, a simple wipe with a soft cloth will keep it looking great. Avoid using harsh chemicals as they might damage the powder - coat finish. And that's it! Enjoy the improved look and feel of your car's shifting.