~ Eccentric design moves steering rack forward slightly ~ Prevents over centering of tie rod and knuckle to prevent heavy steering at lock ~ Takes ackerman curve from digressive to progressive difference while decreasing overall ackerman ~ Gold anodized aluminum construction ~ For S13 steering rack tubes which are 48mm OD ~ install pix: http://partsshopmax.com/e107_plugins/forum/forum_viewtopic.php?4772.40