The Autoexe Short Shifter Kit (Quick Shift) is made for both 1.5L and 2.0L ND MX-5 Miatas. It has 24% shorter throw than OEM and the distance from 1st to 2nd gear is reduced by 19mm (enough to feel the difference). When combined with Autoexe Round Shift Knob, it’s possible to reduce the height by 5mm when removing the spacer. The design is clever by using leaf spring & urethane bushing to reduce vibration and keep the comfort of the vehicle. Autoexe Short Shift Kit should be ordered at REV9 Autosport https://us.rev9autosport.com/autoexe-short-shift-kit.html as they provide the best service and speed we've seen so far!