Perrin rear end links for the 08-13 WRX & STi feature solid aluminium construction and PTFE teflon-lined spherical bearings for the ultimate in strength and sway bar response. The spherical bearings allow for a multitude of dramatic angles while constantly maintaining a solid connection between the sway bar and the end link; making for performance you can feel. The bearings in the Perrin WRX/STI end links are pressed in using a unique 'swedge technique' which makes for a permanent installation of the spherical joint and seals them from debris and dust. The Perrin rear end links have a low profile design that allows for ample clearance for even the largest diameter sway bars. They include stainless steel spacers for both top and bottom connections (not plated steel like the competition) to make sure your endlinks stay looking nice after years of abuse.