WCFAB 2011-2019 Duramax 68" Traction Bar Kit (ECLB, CCLB)***This kit includes 68" long bars for Extended Cab Long Bed and Crew Cab Long Bed Models*** ***This kit is for 2011 2019 GM HD Trucks*** If you have regular cab long bed, extended cab short bed, or crew cab short bed truck use part number WCF100851 If you have a Lift Kit and your U Bolts face up instead of down like factory, use Traction Bar Kit WCF100855 ***For Extended Cab Long Bed and Crew Cab Long Bed Models*** LIFETIME WARRANTY against bending