2. Here’s a look at ring gears. The top is an 8.8-inch-diameter JK Dana 44 ring gear which is bigger than an old school 8.5-inch Dana 44 ring gear. The middle is a Dana 60 gear which comes in at a respectable 93⁄4-inch-diameter. The bottom one is what goes in the Pro Rock 80 with a massive 111⁄4-inch-diameter.