Pit Stop USA is The Online Motorsports Superstore! Superior Axle & Gear rear axles are factory designed by real engineers. No copying here. No grinding the Foote Factory name off our axles and calling them some other brand. Superior High Quality Production Axle Shafts feature the same Superior alloy used in our Evolution Series axle kits, along with computer controlled induction heat treating resulting in a stronger, more durable axle shaft. All Superior axle shafts use a cold-formed rolled spline process that produces an axle spline up to 35% stronger than cut splines! These are direct replacement axle shafts. No modifications needed. Superior Evolution Series Axle Kits are designed and engineered in-house to be the best axles on the market! Superior Axle & Gear listened to their customers, and improved on the factory designs. Each axle or axle kit solves a specific problem and are packaged installation ready with studs, bearings and seals. Many feature larger splines for extreme duty applications, and dual bolt patterns for upgrading to larger studs. Superior axle shafts use a cold-formed rolled spline process that produces an axle spline up to 35% stronger than cut splines! The reason Superior Axle & Gear call it the Evolution Series kits because they are the first to provide enthusiasts with axle and differential combination in the industry.No one does it better than Superior Axle & Gear. Superior Axle & Gear were the first to develop matching axle and differential kits. As well as the first to offer this in a big spline version for enthusiasts wanting something tougher and stronger than stock. All Superior Evolution Series axle kits are complete with both left and right axles, bearings and seals. We feature Superior Replacement Series Axle Shafts and Superior Evolution Series Axle Kits at low everyday prices.