When you get a Slasher Products Complete Front Left Axle, you're getting a fully assembled unit that is specifically fitted to the front left wheel position of your machine. Each axle comes complete with inboard and outboard CV joints already assembled onto a 4340 chrome-moly steel axle bar so you get convenience and high-quality parts. Inside the assembly, every gear, spline, and bearing surface has been precision ground and lubricated with a high-load moly grease so you can trust the axles to operate properly and deliver reliable performance. Neoprene boots cover each joint and are designed to hold up against ozone specifically, the leading factor in boot failure. With components and construction this robust and this precise, these are axles you can count on. Internal precision ground components are assembled with high-temp, high-load moly grease for proper lubrication.