Availability
Spartan lockers are affordable, reliable traction. These USA Standard Gear Spartan lockers are mechanical lockers that fit into a standard differential carrier, replacing the open spider gears. They do not use thrust washers and have a revolutionary spring and pin design to make installation a snap! Spartan lockers feature high-nickel 9310 chromoly drivers and couplers for added strength. Give your vehicle great traction and save some cash. Drop in Spartan lockers for improved traction. They're available for a variety of makes and models spanning more than a half-century.
( 31 )
$255.00
USA Standard Gear ring and pinion sets are high-quality and precision-machined replacements. They're offered for a wide variety of common and hard-to-find applications, differential case designs, and ratios. The right choice adds confidence to your install; select the USA Standard ring and pinion set recommended for your vehicle.
( 49 )
$252.99
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$365.99
Increase the traction capability of Dana 30 front differentials with Spartan Helical LSDs by USA Standard Gear. Compared to other types of limited-slip differentials (LSDs) or Positraction units, these mechanisms provide smoother engagement, quieter operation, and deliver no-worry, maintenance-free performance. Get better linear traction when you order the USA Standard Gear Spartan limited-slip differentials designed for your Dana 30 applications!
Not Yet Reviewed
$383.99
USA Standard Gear master overhaul kits have everything you need to properly rebuild the differential in your vehicle. They let you finish your ring and pinion gear installation or axle rebuild with confidence. These install kits offer a lower price alternative when costs must be kept down. Most USA Standard Gear master overhaul kits include: * Pinion bearings and races * Pinion shims * Carrier bearings and races * Carrier shims * Crush sleeve (if applicable) * Slingers (where used) * Pinion seal and nut * Ring gear bolts * Cover gasket or gasket maker (RTV) * Marking compound with brush * Thread locker
( 31 )
$266.99
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$278.99
USA Standard manual transmission bearing kits include top-quality components to rebuild the bearings in your transmission. They're great for replacing worn out or broken items--even just giving your transmission a quick update, while you're down in the off-season.
( 9 )
$280.99
USA Standard Gear full spools can handle more torque and provide a more rigid ring gear platform than mechanical lockers—and weigh less, too. These full spools do not have any moving parts and are designed to provide equal torque to each wheel all the time. Since they don't allow for differentiation, they're not recommended for use on the street. Mud boggers find these spools able to stand up to tall tires and provide excellent straight line traction. Many drag racers and mud boggers need tough, reliable, and rigid differentials that offer complete lock-up of the axles. For straight line performance, choose the USA Standard Gear full spools that fit your axle.
( 1 )
$302.99
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