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USA Standard Gear is a trademark owned by Ring & Pinion Service. It was established by Randy Lyman. The company specializes in the production of parts such as ring and pinion sets, gears, spartan lockers, installation kits and axles. The USA Standard Kits manufactured by the brand include Koyo bearings and races, threading locking compound, complete shim kit, pinion seal, marking compound and other components. The brand's Spartan Lockers have an exceptional spring and pin design. USA Standard Gear's parts are supplied to makes including Chevrolet, Dodge, Jeep, Ford and Plymouth.


Ring and Pinion gears are parts of the differential that help move the wheels of a car while enabling the rear-wheel drive mode to work seamlessly. As their name implies, the mechanism consists of a ring and pinion design in which the ring is grooved all around its circumference while the pinion is grooved at one of its ends. The ring and pinion work with the driveshaft in generating the torque required to turn the wheels. The ring is connected to the rear wheel axles and the pinion is attached to the front wheels. The performance of the ring-pinion mechanism is directly proportional to the ratio of the grooves in the ring and pinion. USA Standard Gear's ring and pinion offer excellent assistance in turning the wheels of the vehicle and are manufactured using top-notch technologies. They are also designed for an effortless installation procedure.

The main function of the Spartan Locker is to offer traction while driving on rough terrains. The Spartan locker is a mechanical locking device that replaces the spiders in a standard case. It has a spring and pin design which allows for an easy installation. The Spartan locker's couplers and drivers are built using 9310 steel to provide additional strength, thereby making them last longer and perform better. It does not use thrust washers and most of them have a cross-pin shaft. The Spartan Locker is designed to send power to the wheels with most traction. If there is a situation where one of the wheels of your vehicle is in the air, especially while driving over an uneven terrain, the Spartan Locker will keep your vehicle moving by sending power to the wheels that are on the ground. USA Standard Gear's Spartan Lockers are built to provide a reliable, outstanding traction while off-roading. The brand's range of axles is produced using high-precision machinery to meet strict fitting and installation requirements. sells original USA Standard Gear parts and accessories, that are reasonably-priced, carry a warranty and manufactured using cutting-edge technologies. All our car parts meet or exceed the requirements of the customers in terms of quality, reliability and durability. We have ensured a seamless, user-friendly buying process in our site along with a secure online transaction. stocks every automotive part from seals to complete engine/steering systems. For the benefit of our customers, we sometimes offer our USA Standard Gear parts with exclusive deals. Check our site regularly to avail these deals. Feel free to contact us via our toll-free support line or e-mail.