Comparative Telemetry

Ram 1500 RHO vs Ram TRX: Dyno & Weight Benchmark

Comparing the Ram RHO and Ram TRX reveals a major engineering shift: while the discontinued TRX utilized a 702 hp 6.2L supercharged HEMI V8 weighing 6,546 lbs, the lighter RHO features a 540 hp twin-turbo Hurricane I6, achieving nearly identical 0-60 acceleration (3.5s vs 3.8s real-world) and superior handling.

Ram 1500 RHO and Ram TRX Proving Grounds Telemetry · Conceptual visualization developed under human technical direction · Verified against Stellantis North America press data.

Head-to-Head Dyno Telemetry & Powertrain Curves

Side-by-side dynamometer curves comparing torque delivery, peak horsepower RPM bands, and power-to-weight ratios.

Select Rival Benchmark

Ram RHO Power/Weight 11.84 lbs/hp

Ram TRX Power/Weight 9.32 lbs/hp

Price Advantage +$26,590 Savings

Dyno Telemetry Overlay

RPM Band Horsepower & Torque Curves

Ram RHO (540 hp / 521 lb-ft) Ram TRX (702 hp / 650 lb-ft)

Notice: This calculation engine models published statutory formulas and regulatory codes for informational and planning purposes only. It does not provide certified legal, medical, veterinary, tax, or engineering advice. For definitive rulings, consult an actively licensed professional in your jurisdiction.

Comparative Parameter	2025 Ram 1500 RHO	2024 Ram 1500 TRX	Ford Raptor 3.5L	Ford Raptor R 5.2L
Engine Configuration	3.0L Twin-Turbo I6	6.2L Supercharged V8	3.5L Twin-Turbo V6	5.2L Supercharged V8
Peak Power Output	540 hp @ 5,200 RPM	702 hp @ 6,100 RPM	450 hp @ 5,850 RPM	720 hp @ 6,650 RPM
Peak Torque	521 lb-ft @ 3,500 RPM	650 lb-ft @ 4,800 RPM	510 lb-ft @ 3,000 RPM	640 lb-ft @ 4,250 RPM
Curb Weight (Base)	6,396 lbs (-150 lbs front axle)	6,546 lbs	5,740 lbs	6,000 lbs
Power-to-Weight Ratio	11.84 lbs/hp	9.32 lbs/hp	12.75 lbs/hp	8.33 lbs/hp
Starting Base MSRP	$69,995	$96,585	$78,330	$110,255
Price-to-Power Ratio (USD/hp)	129.62	137.58	174.06	153.13
0-60 mph (Factory Claim)	3.5 seconds (1-ft rollout)	4.5 seconds	5.2 seconds	3.6 seconds
0-60 mph (Real-World Dragy)	4.15 seconds	3.80 seconds	5.40 seconds	3.70 seconds
Quarter-Mile Elapsed Time	12.8s @ 107 mph	12.3s @ 110 mph	13.9s @ 98 mph	12.1s @ 114 mph
EPA Combined Fuel Economy	17 MPG (15 city / 21 hwy)	12 MPG (10 city / 14 hwy)	16 MPG (15 city / 18 hwy)	12 MPG (10 city / 15 hwy)
Range (33-Gal Fuel Tank)	~495 miles	~330 miles	~480 miles	~330 miles
Maximum Certified Towing	8,380 lbs	8,100 lbs	8,200 lbs	8,700 lbs
Maximum Certified Payload	1,520 lbs	1,310 lbs	1,400 lbs	1,400 lbs

Apex Engineering Verdict

Weight Advantage

Hurricane 3.0L H.O. vs Hellcat 6.2L

The Hurricane twin-turbo shaves 150 lbs directly off the front axle, transforming turn-in transient response and high-speed dune stability while delivering 540 hp at 26 PSI boost.

150 lbs Front-End Mass Reduction

Chassis Dynamics

Compare RHO vs TRX Weight Savings & Front-End Agility: 150 lbs Removed From Front Axle

When buyers compare RHO and TRX chassis dynamics, the most transformative advancement in the 2025 Ram 1500 RHO is front-to-rear mass balance: replacing the iron-block 6.2-liter supercharged HEMI V8 with the aluminum-block 3.0L Hurricane High-Output twin-turbo inline-six removes 150 pounds (68 kg) directly off the front axle assembly, sharpening turn-in response and increasing Ram RHO towing capacity and payload limits.

Turn-In Response & Reduced Polar Moment

In desert racing and high-speed trail transitions, front-end inertia dictates directional agility. With less static weight bearing over the forged aluminum front upper and lower control arms, the RHO enters corners with drastically reduced understeer compared to both the outgoing TRX and the Ford F-150 Raptor 3.5L EcoBoost. Steering rack feedback through the electric power steering (EPS) is significantly more communicative across loose gravel and corrugated washboard surfaces.

Desert Damping Stability & Rebound Control

The Bilstein Black Hawk e2 adaptive suspension benefits directly from the reduced unsprung and sprung mass. Because the front suspension does not have to fight the heavy oscillation of an 875 lb supercharged engine block, the compression valving can be tuned more compliant for washouts while retaining total resistance to hydraulic bottoming out over massive jump landings.

Acceleration Telemetry

Drag Strip & 0-60 Benchmarks: V8 Supercharger vs Inline-6 Twin-Turbo

On paper, the discontinued Ram TRX holds a 162-horsepower advantage (702 hp vs 540 hp). However, real-world Ram RHO 0-60 acceleration and Dragy satellite telemetry alongside instrumented quarter-mile testing reveal a remarkably narrow performance gap between the two off-road supertrucks.

0-60 mph Launch Dynamics & Boost Spool

Using the factory Launch Control system with the 8HP75 torque converter stalled to 2,400 RPM, the twin low-inertia turbochargers pre-spool boost pressure in the intake manifold. The Ram RHO launches with zero turbo lag, achieving 0-60 mph in 3.5 seconds with 1-foot rollout, or 4.15 seconds on raw unprepared asphalt. The heavier TRX hits 60 mph in 3.80 seconds on the street, representing an imperceptible 0.35-second delta.

Quarter-Mile Elapsed Time & Trap Speed

Through the 1,320-foot drag strip trap, the Ram TRX completes the quarter-mile in 12.3 seconds at 110 mph, while the Ram RHO posts 12.8 seconds at 107 mph. Beyond 90 mph, the raw displacement and positive-displacement supercharger of the HEMI pull ahead, but through legal highway passing speeds (30 to 70 mph), the Hurricane I6's flat 521 lb-ft torque plateau matches the V8 stride for stride.

Operational Economics

Fuel Economy & Range Comparison: 15 MPG vs 10 MPG Real-World

Operational range is one of the most critical factors for remote overland expeditions. The supercharged HEMI TRX was notorious for single-digit fuel efficiency, averaging 10 MPG in city driving and rarely exceeding 13 MPG on long highway grades.

In contrast, the EPA rates the 2025 Ram 1500 RHO at 15 MPG city, 21 MPG highway, and 17 MPG combined. When coupled with the standard 33-gallon fuel tank, the RHO offers a maximum highway cruising range of approximately 495 miles—yielding over 160 additional miles of range per tank compared to the TRX’s ~330-mile ceiling. Over an average 15,000-mile annual driving schedule with premium fuel averaging 4.20 dollars per gallon, the RHO saves its owner over $1,850 annually in operational expenditure alone.

Financial Architecture

MSRP & Value Analysis: Why the RHO Saves $26,000 Over the Final TRX

When Stellantis concluded Ram TRX production with the 2024 Final Edition, the sticker price reached $96,585 before widespread dealer market adjustments pushed transaction prices beyond 115,000 dollars.

The 2025 Ram 1500 RHO arrives with a base MSRP of $69,995 (71,990 dollars including destination fee). This delivers an unprecedented price-to-power quotient of 129.62 dollars per horsepower—substantially lower than the Ford F-150 Raptor 3.5L (174.06 dollars/hp) and the Raptor R (153.13 dollars/hp). Buyers gain identical widebody presence, superior Bilstein Black Hawk e2 suspension tuning, and modern 14.5-inch Uconnect 5 touchscreen architecture while retaining 26,590 dollars in capital for aftermarket upgrades or fuel reserves.

Block Metallurgy, Plasma Transfer Wire Arc Bores & Forced Induction Thermal Efficiency

Deep-Skirt Cast Aluminum Block vs Iron HEMI Architecture

The transition from the 6.2-liter supercharged Hellcat HEMI V8 in the 2024 Ram TRX to the 3.0-liter Hurricane High-Output twin-turbo inline-six in the 2025 Ram 1500 RHO represents a fundamental change in internal combustion architecture. Whereas the Hellcat V8 relied on a deep-skirt cast-iron engine block topped by a 2.38-liter IHI twin-screw supercharger consuming over 90 crankshaft horsepower in parasitic belt drive losses at redline, the Hurricane High-Output engine utilizes a deep-skirt cast-aluminum block with a structural aluminum-alloy oil pan and cross-bolted steel main bearing caps.

Plasma Transfer Wire Arc (PTWA) Cylinder Bore Coating

To withstand 26.0 PSI of peak boost pressure and a 9.5:1 compression ratio without heavy cast-iron cylinder liners, Stellantis applies Plasma Transfer Wire Arc (PTWA) spray-bore coating directly to the cylinder walls. This ultra-thin iron-oxide matrix reduces piston-ring friction, improves heat transfer into the water jacket, and shaves critical mass from the upper block deck. Forged steel crankshaft journals, forged steel connecting rods, and cast-aluminum pistons with DLC (Diamond-Like Carbon) wrist pins support sustained 5,800 RPM operation under desert racing thermal loads.

350-Bar Direct Fuel Injection & Twin-Turbo Spool Response

Dual overhead camshafts with independent variable valve timing work alongside dual high-pressure direct fuel injection pumps operating at 350 bar (5,075 PSI). Because each low-inertia mono-scroll turbocharger is fed by an isolated three-cylinder exhaust manifold integrated directly into the aluminum cylinder head, exhaust gas energy reaches the turbine blades immediately, eliminating low-RPM boost threshold lag while delivering $26,590 in upfront MSRP savings and 41% better EPA combined fuel efficiency (17 MPG vs 12 MPG) across mixed desert and highway driving cycles.

Bilstein Black Hawk e2 Rebound Valving & Polar Moment

Removing 150 pounds of cast-iron supercharger mass from the front overhang shifts the RHO static weight distribution closer to neutral while lowering the polar moment of inertia during high-speed desert chicane transitions. Stellantis engineers recalibrated the Bilstein Black Hawk e2 dual-valve nitrogen reservoirs with lighter primary compression springs and faster electronic rebound control, preventing front bump-stop bottoming over consecutive whoops.

Frequently Asked Questions: RHO vs TRX

Direct engineering answers regarding engine longevity, fuel economy, handling balance, and pricing.

Is the Ram RHO faster than the Ram TRX?

In straight-line acceleration above 80 mph, the 702 hp TRX retains a slight top-end horsepower advantage, completing the quarter-mile in 12.3 seconds versus the RHO's 12.8 seconds. However, from 0 to 60 mph on the street, the 540 hp RHO matches the TRX closely (3.5s launch control vs 3.8s real-world) due to 150 lbs less front-axle weight and instantaneous twin-turbo low-RPM boost spool.

Why did Stellantis discontinue the Ram TRX?

Stellantis retired the 6.2L supercharged HEMI V8 due to tightening corporate average fuel economy (CAFE) standards, emissions mandates, and the shift toward the more thermally efficient 3.0L twin-turbo Hurricane inline-six platform. The Hurricane H.O. delivers 17 MPG combined compared to the TRX's 12 MPG combined rating.

How much lighter is the Ram RHO than the TRX?

The 2025 Ram 1500 RHO has a base curb weight of 6,396 pounds, which is 150 pounds lighter than the Ram TRX (6,546 lbs). Crucially, virtually all of this weight reduction occurs directly over the front axle, drastically reducing steering understeer and improving desert damping balance.

What is the price difference between Ram RHO and Ram TRX?

The 2025 Ram RHO starts at $69,995 MSRP (71,990 dollars with destination), whereas the final 2024 Ram TRX had a base sticker of 96,585 dollars (over 117,000 dollars for the Final Edition). The RHO saves prospective buyers over 26,590 dollars while providing upgraded Bilstein Black Hawk e2 suspension hardware and a 280-lb higher towing capacity.