Review on 🚗 Durable and Reliable Ten Factory MG21102 Dana Axle: Upgrade Your Vehicle's Performance by Dale Rylander

They are really good. Put them on my 2007 JK front axles. They won't fit if you have axle tube bushings, so FYI. Otherwise they are very easy to install. You will first need to cut the plastic protection off your existing axles at the U-joints and then remove the axle guides to get the axles back up. Lubricate them after reinstalling the axles. the C is on the back so I had to pull out the mirrors and use the rubber tip on the grease gun. I pumped up the grease until it came out, then put the mirrors back in. No problem. Edit: I've been using them for a while and they will still be going strong. One issue I have is that my driver's side rotates quite a bit so you never know where the Zerk fitting is going to end up. It doesn't matter much if you need to grease it you can turn it where it needs to be to get the grease gun on it. If you're looking to fix this issue, I would recommend putting some RTV sealant on the area that goes into the axle tube after installation. This will likely prevent it from spinning.