Locking system having: a door frame , which has a first bearing limb with a first bearing through-hole and a second bearing limb with a second bearing through-hole ; an eccentric bearing bolt with a first bearing end and a second bearing end , wherein the first bearing end is designed to be accommodated in the first bearing through-hole and a second bearing end is designed to be accommodated in the second bearing through-hole , wherein the bearing bolt has a central cylinder between the two bearing ends , the central cylinder being designed eccentrically in relation to a longitudinal axis of the bearing bolt , said axis leading through the two bearing ends ; wherein the bearing bolt has a first external toothing ring at the first bearing end and a second external toothing ring on the central cylinder ; an eccentric bearing bushing with a central through-passage , which is designed to accommodate the central cylinder of the bearing bolt for sliding action, and with a lateral cylinder surface , which surrounds the central through-passage eccentrically, wherein the central through-passage has a first internal toothing ring , which is designed to complement the second external toothing ring of the bearing bolt ; a fastening disc , which is designed for fastening on the first bearing limb and with a through-hole for accommodating the first bearing end of the bearing bolt , wherein the fastening disc has a second internal toothing ring in the through-hole , the second internal toothing ring being designed to complement the first external toothing ring of the bearing bolt ; a catch sleeve , which is designed to accommodate the bearing bushing for sliding action; and a vehicle door , which has a catch which is designed to be swung around the catch sleeve for the purpose of locking the vehicle door to the door frame . a door frame , which has a first bearing limb with a first bearing through-hole and a second bearing limb with a second bearing through-hole ; an eccentric bearing bolt with a first bearing end and a second bearing end , wherein the first bearing end is designed to be accommodated in the first bearing through-hole and a second bearing end is designed to be accommodated in the second bearing through-hole , wherein the bearing bolt has a central cylinder between the two bearing ends , the central cylinder being designed eccentrically in relation to a longitudinal axis of the bearing bolt , said axis leading through the two bearing ends ; wherein the bearing bolt has a first external toothing ring at the first bearing end and a second external toothing ring on the central cylinder ; an eccentric bearing bushing with a central through-passage , which is designed to accommodate the central cylinder of the bearing bolt for sliding action, and with a lateral cylinder surface , which surrounds the central through-passage eccentrically, wherein the central through-passage has a first internal toothing ring , which is designed to complement the second external toothing ring of the bearing bolt ; a fastening disc , which is designed for fastening on the first bearing limb and with a through-hole for accommodating the first bearing end of the bearing bolt , wherein the fastening disc has a second internal toothing ring in the through-hole , the second internal toothing ring being designed to complement the first external toothing ring of the bearing bolt ; a catch sleeve , which is designed to accommodate the bearing bushing for sliding action; and a vehicle door , which has a catch which is designed to be swung around the catch sleeve for the purpose of locking the vehicle door to the door frame . <EOS>