The Spartan Locker by USA Standard Gear is a mechanical locker that replaces the spider gears in a standard gears. The Spartan Locker's design does not use the thrust washers and has revolutionary spring and pin design that ...

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The Spartan Locker by USA Standard Gear is a mechanical locker that replaces the spider gears in a standard gears. The Spartan Locker's design does not use the thrust washers and has revolutionary spring and pin design that makes installation a snap! The couplers and drivers are made from 9310 steel, for added strength. Each spartan carries a one year warranty.

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