The Miata has a great gearbox, Cobalt has succeeded in making it even sportier! Cobalt’s zinc-plated billet steel sport shift kit reduces shift throw by 25% and can take the constant yanking and jerking unlike billet aluminum shifters that have been known to break. Shifting is even easier with a simple flick of the wrist. To ensure OEM quality and performance they supply a new dust boot, bushing and washers with their sport shifter. Complete with instructions and ready to install. Knob sold separately, or reinstall your stock knob.