4.88 RING AND PINION GEARS. SAME AS 4.89 OR 4.86 RATIOS. WORKS ON 3.73 DOWN CARRIER (9/16 ring gear bolts required / drilling of carrier)
Fits 3.07-3.73 carrier, requires drilling non-rubicon carriers to 9/16" dia and using 9/16" Rubicon Ring gear bolts $15.00 set