Introducing the new Axle Bar / Inner CV and Outer Race Upgrade for the 86-92 Mazda RX-7 Turbo II. This upgrade includes high grade aircraft quality axle bars, new porsche-style 108mm inner CV's with bolt-on flanges and inner stubs into the differential. We also include chromoly outer CV races to convert your factory outer CV from 26 spline internal to 36 spline to fit our larger axle bars. You must reuse your factory outer CV with this upgrade. Rated to 800HP with a 1-year warranty.