DCR Complete 3rd/4th Gear Synchronizer with DCR Carbon Blocker Rings and DCR Shift Kit Springs. Comes with inner hub and fully assembled for quick installation. Synchronizer slider is DCR modified with better angle on teeth for smooth shifting and complete gear tooth engagement. DCR exclusive carbon friction material on blocker rings. DCR shift kit springs to ensure complete gear stopping for smooth grind free shifting. Do not go back together stock when stock does not last. Go back together with DCR! Check out our other items on eBay and our website. Search DCR SRT.