What better way to celebrate Independence Day than with an all-American pick-up truck that pays homage to the Hemi V8 engine?
Meet the Hennessey Mammoth 400 Ram Sport: a partnership between the Texas-based tuning company and suspension supplier Fox Factory Inc.
Just 250 examples will be produced, all featuring a colour scheme inspired by another American icon: the Dodge Viper.
A final salute to the Hemi V8
For the 2025 model year, Ram is killing off the 5.7-litre Hemi V8 engine for its 1500 pick-up. Instead, the popular truck will be offered solely with a 3.0-litre twin-turbocharged straight-six.
The loss of an engine as beloved as the Hemi V8 is reason enough for Hennessey to build the Mammoth 400 Ram Sport special edition.
Company founder and CEO John Hennessey said: “We are excited to partner with Fox to build a special sport truck with a uniquely American livery for the final Hemi V8-powered Ram trucks. Our Mammoth 400 Ram celebrates American independence with patriotic colours combined with the ‘fireworks’ that only the Hemi V8 engine can deliver.”
Hennessey has left the 395hp V8 unaltered, but has added a Borla sports exhaust system with carbon fibre tips.
An aggressive sport truck
A set of Fox Factory suspension dampers are combined with a RideTech lowering kit, dropping the Ram Sport closer to the ground, which makes for a meaner stance on the standard 22-inch alloy wheels.
Hennessey has fitted its own carbon fibre bodykit, with bespoke front and rear bumpers, along with special side skirts.
There is also Hennessey exterior badging and embroidered seat headrests, plus each Mammoth 400 Ram Sport comes with a numbered plaque inside its engine bay.
The Red, White and Blue
Completing the makeover is a choice of colour schemes that patriotically reference the American flag, along with the Dodge Viper sports car.
Hennessey made its name by tuning the Viper in the late 1990s and early 2000s. The Mammoth 400 Ram Sport comes in a choice of GTS Blue with white stripes, Viper Red with white stripes or Viper White with blue stripes – a direct link to those glory days.
The 250 examples are available to purchase through authorised dealerships in the United States, or by contacting Hennessey directly. Each truck even comes with a three-year or 36,000-mile warranty as standard.