I don't know if this has been covered before I searched and found nothing on it. I have a D44 rear with the factory Trac lock its got some miles under its belt and I know it probably needs rebuilt or replaced due to the miles on the jeep. I have found a rebuild kit for pretty cheap the clutches new are around $50.00 and have read through a few right ups where you can stack the clutches different to get more lockup. I was thinking about rebuilding it have any of you rebuilt the factory trac lock in your d44's I just don't know if its worth rebuilding or just saving up for a better one to install. I do off road occasionally but this thing sees a lot of road also and I would love to have a little more traction.