Frame, Chassis & Suspension
Ram says that the new truck is designed to handle rough terrain at more than 100 mph, and that required a significant reworking of the 1500 from the ground up.
Underpinning the TRX is a unique frame that’s thicker than the one used on standard Ram 1500, and high-strength steel has been strategically placed throughout in order to ensure the frame is up to the task of high-speed desert running. Sections of the frame have been hydroformed for dimensional accuracy, which reduces the need for welding, and the side rails are fully boxed.
The frame’s front rails use high-strength steel and hydroformed sections to provide strong foundation for the front suspension loads that the TRX will be subjected to on the trail.
Galvanized frame components also improve its resistance to corrosion, but jumps and big impacts are the primary concerns here – so much so that the TRX weighs 600 pounds more than a standard Hemi-powered Ram 1500 in the same cab configuration. You can blame some of that extra mass on the array of skid plates equipped to the TRX, which protect the front axle, transfer case, transmission pan and fuel tank.
The suspension is a significant departure from a typical Ram 1500, too. It’s been designed with additional wheel travel in mind – 13 inches in total, in fact. Up front is an all-new independent setup with forged aluminum upper and lower control arms that are longer and bigger than the standard components, and Ram notes that they paid “special attention to the caster and camber angles during suspension cycling” when developing those components.
As with the rest of the Ram 1500 lineup, the rear suspension of the TRX is a five-link coil design, though it’s been tweaked for TRX duty to accommodate a Dana 60 rear axle. New adaptive 2.5-inch Bilstein Black Hawk e2 performance shocks are on hand as well, and utilize a single-piece construction design comprised of rigid aluminum to reduce and dissipate heat. These new dampers feature dual electronic proportional valves, which continuously adjust damping force to maintain optimum stability, as well as nitrogen-charged remote reservoirs for enhanced durability. The dampers’ behavior can also be adjusted through the various drive modes that are available – more on that later – and have a three-zone “Jounce Cut Off” feature for progressive bottom-out control.
Stopping power is provided by two-piston monoblock calipers and 15-inch vented rotors up front, while the rear uses single-piston calipers at 15-inch discs.
Unlike the Ford F-150 Raptor, the TRX is equipped with electronically adaptive Bilstein dampers, which should provide better stability and improved ride quality both on and off-road.
To help provide 11.8-inches of ground clearance, an approach angle of 30.2 degrees, breakover angle of 21.9 degrees and departure angle of 23.5 degrees, the ride height of the TRX is two inches higher than a standard Ram 1500 thanks in part to the 35-inch, 325mm-wide Wrangler All Territory tires it rides on, which Goodyear developed specifically for this truck.