3. Conventional Dana 60 axles use 9 3/4-inch-diameter ring gears. The Super 60 uses a larger 10-inch-diameter ring gear for more tooth contact and improved strength. The Super 60 carrier is also new and features net-formed spider gears, but it is dimensionally identical to traditional Dana 60 pieces. That means the Super 60 will accept all aftermarket Dana 60 lockers and limited slips.