SPL Parts Adjustable Rear Traction Arm Set (Dogbones) - 1989-1998 Nissan 240SXSPL Parts Adjustable Rear Traction Arm Set (Dogbones) Fitment: 1989 1998 Nissan 240SX Part #: SPL RTR S13D Overview The SPL Parts Adjustable Rear Traction Arm Set, also known as dogbones, is a high performance suspension component designed specifically for the Nissan 240SX from 1989 to 1998. These traction links replace the factory rubber bushings with a more durable, adjustable design that enhances rear suspension stability and handling response.