After lifting your GM 2500HD/3500HD, the factory brake lines may no longer be sufficient for the increased height. Our range of brake lines features extended-length options specifically designed for lifted suspensions, built with durable materials to ensure long-lasting reliability. Take your stopping power to the next level by pairing your new brake lines with our selection ofBrake Rotors! GM Duramax Fitments: 2004, 2005 GM 6.6L Duramax.Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.Some exceptions apply, please see individual product pages for specific fitments.