PLANET, 4L60E / 700R4, REAR 5 GEAR, 1987-UP. 700R4 Extreme Duty rear planet with 5 pinion gears. These two planet gears are twenty years past due, this has always been a weak point on the 700R4 transmissions. These 5 pinion 2002 type gears are at least 25% stronger than the old 4 pinion type. The use of five pinion gears for the input and reaction gear sets spreads the torque load so that less of the load is held by any one gear. This five pinion reaction carrier was designed for the increased torque load of the 6.0L version of the Gen III V-8, as well as Corvette’s LS6 engine. The 5 pinion gears are a great feature. Due to the fact that GM no longer makes this OEM gear and all of the new-old-stock ones are in poor conditions, we no longer sell the OEM gear. We have found a high quality aftermarket gear to take its place.