This Jeep Wrangler JK gets a Dynatrac Pro Rock 44 with Pro Steer Ball joints, 5.13's, Eaton Elocker, some skids, some controls arms and more. The Pro Rock 44 looks like we may finally have a decent upgrade available for the JK wrangler. The option to reuse you old knuckles, breaking system and wheels helps to keep the cost down. Using a Rubicon Locker allws the use of beefier shafts and larger ujoints. We highly recommend the pro steer ball joints, since unfortunately at this time the ball joints remain the same.