SEATBELT RETRACTOR ASSEMBLY

A seatbelt retractor includes a spool elongated along an axis. The seatbelt retractor includes a cylinder supported in the spool and having a thread. The seatbelt retractor includes a torsion bar in the cylinder and having a thread engaged with the thread of the cylinder. The seatbelt retractor includes a stopper supported by the torsion bar at the thread of the torsion bar and spaced from the cylinder.