The warehouse on wheels Rating: 4/5
The Sprinter is the most common host for a 5.5D Rt3 build. The appeal is the electronic traction control and the 48-volt hybrid system. However, purists argue a true "5.5D" requires removal of the active lane assist and the addition of a hydraulic anti-roll bar disconnect. Companies like Outside Van and Storyteller have perfected the Sprinter-based Rt3, achieving the 5.5-degree side-slope stability by installing custom lower control arms. 5.5d Rt3 Van