Revolution Gear & Axle Ford 9in 3.89 Ratio Ring & Pinion Set

If you're looking to change the gear ratio in your Ford 9-inch rear end, a new ring and pinion set is the way to go. This set from Revolution Gear & Axle gives you a 3.89 ratio, which is a popular choice for balancing highway cruising with off-the-line acceleration. It's a solid option for trucks or vehicles that see a mix of daily driving and towing, or for muscle cars that need a bit more grunt off the stoplight.

Revolution Gear & Axle is known for making well-built drivetrain components. This ring and pinion set is made from strong steel and precision-machined to ensure smooth operation and durability. Getting the gear ratio right is crucial for how your vehicle performs, affecting everything from fuel economy to how quickly it can accelerate. A 3.89 ratio is a noticeable change from stock for many applications, offering improved torque multiplication without sacrificing too much highway comfort.

Installing a ring and pinion set requires specialized knowledge and tools, so it's often best left to a professional mechanic. However, once installed correctly, this set will provide reliable performance for your Ford 9-inch rear axle.