A frame lock for a two-wheeler, said frame lock comprising: - a lock body that extends in a longitudinal direction from a first end, at which it has a cylinder receiver, to a second end, at which it has a bolt receiver, and that has a rotary hoop receiver; - a rotary hoop that is at least partly received in the rotary hoop receiver and that is adjustable between an open position, in which said rotary hoop releases a wheel of the two-wheeler for a rotation, and a closed position in which said rotary hoop blocks the wheel against rotation; - a main latch that is linearly adjustable transversely to the longitudinal direction between a locked position, in which said main latch engages with an engagement section into the rotary hoop receiver to block the rotary hoop at least in its closed position, and an unlocked position in which said main latch releases the rotary hoop for an adjustment; - a locking device that is received in the cylinder receiver and that has an entrainer via which it is coupled to the main latch such that the main latch can be adjusted into its unlocked position by the locking device via the entrainer; - a bolt latch that is linearly adjustable transversely to the longitudinal direction between a locked position, in which said bolt latch engages with an engagement section into the bolt receiver to block a bolt received in the bolt receiver, and an unlocked position in which said bolt latch releases the bolt for a departure from the bolt receiver; and - a spring that preloads the bolt latch in the direction of its locked position, wherein a coupling section of the main latch and a coupling section of the bolt latch are coupled to one another, in particular directly, such that, - on the one hand, the bolt latch can be adjusted into its unlocked position by the locking device via the main latch, and characterized in that, - on the other hand, the main latch is preloaded in the direction of its locked position by the spring via the bolt latch. - a lock body that extends in a longitudinal direction from a first end, at which it has a cylinder receiver, to a second end, at which it has a bolt receiver, and that has a rotary hoop receiver; - a rotary hoop that is at least partly received in the rotary hoop receiver and that is adjustable between an open position, in which said rotary hoop releases a wheel of the two-wheeler for a rotation, and a closed position in which said rotary hoop blocks the wheel against rotation; - a main latch that is linearly adjustable transversely to the longitudinal direction between a locked position, in which said main latch engages with an engagement section into the rotary hoop receiver to block the rotary hoop at least in its closed position, and an unlocked position in which said main latch releases the rotary hoop for an adjustment; - a locking device that is received in the cylinder receiver and that has an entrainer via which it is coupled to the main latch such that the main latch can be adjusted into its unlocked position by the locking device via the entrainer; - a bolt latch that is linearly adjustable transversely to the longitudinal direction between a locked position, in which said bolt latch engages with an engagement section into the bolt receiver to block a bolt received in the bolt receiver, and an unlocked position in which said bolt latch releases the bolt for a departure from the bolt receiver; and - a spring that preloads the bolt latch in the direction of its locked position, wherein a coupling section of the main latch and a coupling section of the bolt latch are coupled to one another, in particular directly, such that, - on the one hand, the bolt latch can be adjusted into its unlocked position by the locking device via the main latch, and characterized in that, - on the other hand, the main latch is preloaded in the direction of its locked position by the spring via the bolt latch.