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- Feb 5, 2018
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VIDEO: Hennessey Takes Its New TRX Mammoth 900 To The Dyno & Track:
HPE Amps Up The TRX To 900+ Horsepower...
Since the introduction of the 2021 Ram 1500 TRX, Hennessey Performance Engineering (HPE) has unveiled two different power upgrade kits for the performance off-roader. The first was a six-wheel-drive (6x6) variant, ditching the supercharged 6.2-liter HEMI HELLCAT V8 in favor of a tuned...