Im not sure but I think the line lock would be for those with a twin stick t case. Where the rear brakes would be locked with the rear axle disengaged and the front axle engaged which would allow the jeep to maneuver more tightly while rock crawling.
Anyone who is currently running or who has run the Mastercraft Courser MXT have anything bad to say about them? Ive been hearing nothing but positive things about them.