With a 6.2-litre HEMI with 575 horsepower, the vehicle is the most powerful Ram 1500 the company has ever built
October 26, 2016
Auburn Hills, Mich—Ram has introduced the Ram Rebel TRX concept. Rebel TRX is a 100-mph off-road machine with 575 horsepower—the most powerful half-ton truck the company has ever built, says Ram. The Ram Rebel TRX concept hits triple digits in an off-road environment with the help of a supercharged 6.2-liter HEMI V-8.
The heart of the Ram Rebel TRX concept is a powertrain, the company said. A 6.2-litre supercharged HEMI with 575 horsepower, the most powerful Ram 1500 the company has ever built, lays the groundwork.
Mated to the TorqueFlite 8HP70 eight-speed automatic transmission, new calibrations were used for the engine, transmission and drivetrain to optimize the expected high-speed off-road driving cycle.
The Ram Rebel TRX concept uses Ram’s 4×4 Performance Control System with a BorgWarner 44-45 transfer case. The system employs different modes of operation: Normal, Wet/Snow, Off-road and Baja.
The Ram Rebel TRX concept uses a standard Ram 1500 front axle with an open differential and custom CV half-shafts to handle the wider track dimension. The spindles are moved forward to make room within the fender wells for the aggressive 37-inch tires.
In the rear, a Dynatrac Pro 60 axle spools power through an electric, selectable locker to 35-spline, 1.5-inch axle shafts. The locker is available in all modes and commits both rear wheels to traction at the same speed, spreads the torque load and maximizes the tractive effort (power put to the ground) in full-throttle maneuvers.
The Ram Rebel TRX was built around suspension and frame prerequisites. Equally important was adapting as many systems from the standard Ram 1500 as possible to ensure durability and proper function.
The high-strength steel frame structure of the Ram Rebel TRX is virtually unchanged when compared to a standard Ram 1500. The frame uses low-torsion attributes that increase durability, stability and handling precision.
A 40-percent increase in suspension travel and 37-inch tires contribute to incredible ground clearance. This combination allows the TRX concept to overcome surface obstacles at high speed.
The front suspension incorporates custom-built upper and lower A-arms with special attention to caster and camber angles during suspension cycling. Overall, front- and rear-wheel travel is increased to more than 13 inches from the standard 9 inches. The front load is managed by a state-of-the-art, adjustable, performance coil-over shock with internal bypass. The result is a smooth ride over smaller bumps, and when the bumps become mounds, the reaction speed and heat dissipation is unbeatable, softening the impact on occupants and maintaining the tire-to-ground contact.
To clear the roots-style blower mounted atop the HEMI engine, the Rebel TRX uses a hood based on the taller Ram Heavy Duty design. The raised fender height matches shoulders to chest. A drone’s-eye view exposes bright LED clearance lighting and the acute hour-glass body lines as they dive back into the doors only to pop back out in the back, enabling rear tires to firmly tuck into the wells.
The side of the Rebel TRX leads to five-inch, side-exit exhaust ports integrated within a full-length rock rail for added body/sill protection.
Closing out the rear of the truck, a large “Ram” badge in Matte Black is borrowed from the Rebel and covers the tailgate. A custom rear steel bumper with integrated skid plate and tow hooks matches capability features on the front of the truck.
When traversing rough terrain at high speeds, seating is important. The interior design team chose suede with accent mesh cloth inserts to cover the rear bench and front buckets. The suede inserts provide tremendous grip to clothing. The front seats integrate lateral support upper bolsters with embroidered logos. All four seats are strapped with six-point harnesses, further fixing occupants to their proper locations.
An open upper glove box with elastic straps holds a sturdy TRX-labeled bag with color matched tools. A seven-inch thin-film transistor (TFT) display cluster features muddy tracks and TRX badge graphics. The same graphics fill the screen on an 8.4 Uconnect. To record TRX’s accomplishments, a custom camera mount is located at the rear-view mirror.
The center console matches efforts on the instrument panel and includes a new polystable shifter trimmed in black suede and Header Red stitching. Designers re-trimmed the Rebel TRX armrests with solid Header Red accent stitching and wrapped the upper bolster in suede to keep arms in place. Nylon-strap door pulls are embroidered with “Release.”
A sport bar covered in black anodized paint provides anchor points dedicated to the six-point harnesses and spans from B-pillar to B-pillar – formed to allow maximum possible seat travel.
The Rebel TRX interior floor trades carpet for black rubberized coating. Black all-weather mats from Mopar reduce foot slip when foot-to-pedal placement is crucial.