USA Standard ring & pinion gears are the perfect upgrade for your vehicle. If you're towing, hauling equipment, racing, off-roading, or restoring performance lost from adding oversize wheels and tires, USA standard ring & pinions will equip your ride with the power you need to get the job done. When oversized tires are added to your ride, you can expect a decrease in acceleration. The correct set of ring & pinion gears will revive your acceleration and your truck will run more efficiently. When towing or racing, changing to a high ratio will allow your engine to put more power to the ground while reducing stress on the engine and transmission. USA Standard uses the latest designs and manufacturing technologies to provide a gear that is built to last and easy to install and set up.