Die-hard off-road fanatics will often choose automatic locking differentials or a rear spool for cost savings, simplicity, and reliability, taking in stride any of the handling quirks that may arise.

Use as a front differential when 4x4 has a rear locker and no power steering. *They're free. *They can be welded up solid for a poor man's spool, or upgraded with a Tractech EZ Locker or a ...

Spools are used in many drag race cars; they replace the differential assembly and mount ... serves a number of functions in a front-engine, rear-wheel-drive configuration. It provides the final ...

While the locking differential offers the most efficient way to drive both rear axles in a straight line (short of a spool), lockers also demand some respect in wet or slippery weather.

the X-rated version has exclusive equipment such as electronic locking front and rear differentials, extra underbody protection, longer suspension travel, and trick Multimatic spool-valve dampers.