Rear Axle Assembly - No Tubes - Professional Quick Change - 10 in Ring Gear - 4.86 Ratio Standard - Magnesium Center - Each. **NOTE: INCLUDES EVERY OPTION THAT THE SATURDAY NIGHT SPECIAL HAS *PLUS* BLACK THERMAL COATING * REM FINISHED RING AND PINION GUN DRILLED LOWER SHAFT * LOW DRAG SEALS ULTRALIGHT ALUMINUM SPOOL * PRO-GLIDE TREATED BEARINGS