Nostalgic Styling. Add cool vintage styling from the 60's to your S550 Mustang with a classic ball style Modern Billet Polished Shift Knob. This 2-inch billet aluminum polished shift knob features a black embossed 6-speed shift pattern and will look fantastic with any 2015-2021 color scheme.Reverse Lock-out Compatible. Specifically engineered to work with the S550 Mustang's pull-up style reverse lockout mechanism, this Modern Billet Shift Knob won't leave an ugly gap between the bottom of the knob and the top of the factory shift boot. High Quality Materials. This 2-inch retro inspired shift knob by Modern Billet is made from 100% solid billet aluminum and then completed with an embossed 6-speed shift pattern on top. There's no need to worry about paint flaking off in your hand or the shift pattern fading from daily use. Simple Installation. With its 12mm x 1.25 thread pattern, simply unscrew your old stock shift knob and screw on this new Modern Billet Knob in its place. Swapping out your shift knob couldn't be faster or easier, giving you a big change in only a few minutes.Application. This Modern Billet Polished 6-speed Shift Knob is specifically designed to fit all 2015-2021 Mustangs equipped with the MT-82 6-speed manual transmission and the stock shifter handle, including the V6, EcoBoost and GT models.