Extended Shackles For Toyota Landcruiser If you are after more flex in your vehicles rear end, then Extended Shackles are an easy way to achieve it. Basically, the extended shackle creates a greater sweeping arc of the shackle which in turn provides for more wheel travel and a nicer ride. Our Extended Shackles are engineered to the highest standard, with factory size Greasable Pins (to allow installation of factory bushings) and 50mm extended plates. All our extended shackles incorporate a stepped bolt design, ensuring that the shackles cannot be over-tightened, resulting in deformation of the bushings.