The quality of these kits is outstanding, you really do have to see them to appreciate the precision that has gone into the manufacturing of them. I’ve only recently learned of this website and I’m amazed at the items available, The front and rear metal kit, the shock kit and the stainless steel screws kit for the XR311 kit turns it into a wonderful model, handling is impressive, and it just looks so much beefier, The kits come with full instructions, it’s so easy to follow, you just can’t go wrong. You will not be disappointed at all.