The Ram 1500 TRX is a factory-built off-road weapon with a 6.2L supercharged HEMI V8 pushing out over 700 horsepower. From the showroom floor, it already runs with sports cars and embarrasses most trucks at a stoplight.
But if you are reading this, you already know that stock is just the starting point.
When it comes to Ram TRX performance parts, there are two paths most owners take. The first is simple and easily reversible upgrades that sharpen the truck and make it stand out. The second is real power mods that unlock considerably more power from the Hellcat engine.
Let’s take a look at both approaches and help you decide how you’ll turn your beast into an all-out monster.
Best Bang-for-the-Buck Ram TRX Performance Parts
Not every upgrade needs to crack open the engine. Some of the most satisfying mods are simple, bolt-on, and easy to reverse if you ever decide to go back to stock. These upgrades improve stance, sound, response, and your truck’s attitude without major work.
Leveling Kit to Eliminate the Rake
From the factory, the TRX has a slight front rake. It is there for function, especially under load. But visually, many owners prefer a level stance. A quality leveling kit like the one from Eibach eliminates the rake while keeping the ride quality close to factory. It works with the stock Bilstein Black Hawk e2 shocks and does not mess with the truck’s geometry when installed properly.
The big bonus is tire clearance. With the right setup, you can fit 37-inch tires. That alone transforms the look of the truck.
37-inch Tires with Off-Road Wheels
A set of 37-inch off-road tires adds sidewall, grip, and that gritty attitude. Brands like Nitto Ridge Grappler, Toyo Open Country AT3, and BFGoodrich KO2 are common picks. They balance road manners with true off-road capability. With the right wheel offset, you get a wider stance and improved stability. The truck looks more planted and more serious.
An off-road wheel/tire combined with a leveling kit is the simplest and most practical Ram TRX performance parts your money can buy.
Cat-Back Exhaust to Make the HEMI Sing Louder
The 6.2L supercharged HEMI under the hood is a monster, and a quality cat-back exhaust system gives it the roar it deserves. Brands like Borla, Corsa, and MagnaFlow offer systems designed specifically for the TRX.
You want that deep, supercharged V8 rumble at idle and a hard bark when you get into boost. A good system reduces backpressure, adds a couple of horsepower, sheds a little weight, and gives the truck the sound it deserves.
Cold Air Intake Kit for Better Airflow
A high-quality cold air intake from brands like S and B or K&N improves airflow and helps the supercharger draw in cooler, denser air. Power gains are modest on a stock truck, but throttle feel improves, and the supercharger whine becomes more pronounced.
This is another easy, reversible upgrade that works well with other basic Ram TRX performance parts.
Unleash the 6.2L HEMI’s Potential: Pedal Commander® Throttle Response Controller
The 6.2-liter of fury that hides under the TRX’s hood is insanely powerful. But modern drive-by-wire throttle systems are tuned for smoothness and emissions, not instant punch. And that is where the Pedal Commander® comes in.
The Pedal Commander® throttle response controller plugs directly into the accelerator pedal sensor and remaps the throttle signal. It does not add horsepower; it unlocks what is already there. Pedal Commander® makes your truck’s throttle response sharper, quicker, and more direct.
You can switch between four modes: Eco, City, Sport, and Sport+. You can then fine-tune each mode with nine sensitivity levels. That’s 36 throttle response settings to match your driving style. Whether you are cruising to work, launching from a stoplight, or hitting the trail, you control how aggressive your TRX’s gas pedal feels.
On a 702-horsepower supercharged truck, better throttle response changes how it drives completely. The boost comes in harder, your truck reacts instantly, and the whole drive feels more alive.
On top of improved performance, Pedal Commander® also boasts one of the best additional vehicle security solutions. It comes with a built-in Anti-Theft feature. You can subscribe to the service, calibrate your unit once, and disable the gas pedal at any time from the mobile app. Stay confident wherever you have to leave your TRX unattended.
The Pedal Commander® throttle response controller is the most advanced unit on the market, and it is tested and certified by the authorities. It has TUV, ISO, FCC, and CE certifications under its belt. Pedal Commander® is also CARB-compliant, making it 50-state legal across the US. Pedal Commander® does not leave diagnostic flags on the ECU, occupy the OBD-II port, cause a CEL light, or trigger the limp mode. It is the safest way to upgrade the throttle response and overall performance of your Ram TRX.
If you want the most noticeable and simplest bolt-on upgrade, Pedal Commander® is it.
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Ram TRX Performance Parts for Serious Power
At some point, 702 horsepower still sounds wild, but it becomes simply a reality. The Hellcat platform responds extremely well to more boost and proper tuning. This is where things get real.
Supercharger Pulley Upgrade
The stock TRX runs a factory pulley that limits boost to keep the engine within safe factory margins. Swapping to a smaller upper pulley increases supercharger speed and raises boost pressure.
Common setups use a 2.85-inch or 2.75-inch upper pulley. Reputable brands like GripTec or Metco Motorsports offer complete kits. This simple change can add a significant boost when paired with the right supporting mods. On pump gas with a conservative setup, many TRX builds see gains in the 80 to 100 horsepower range at the crank with just a pulley and tune. Some even go beyond that with supporting mods.
But this is not a casual bolt-on like a cat-back exhaust. Belt alignment, proper installation, and supporting airflow mods matter. Heat management also becomes more critical.
ECU Tuning
A pulley upgrade without tuning is asking for trouble. Custom ECU tuning from experienced Hellcat platform tuners such as HHP Racing, OST Dyno, or other respected Mopar specialists is key. A proper tune adjusts fuel delivery, ignition timing, boost targets, and torque management.
With the right calibration, the 6.2L HEMI feels brutally strong. Mid-range torque becomes addictive, and top-end pull feels relentless. You can choose between conservative pump gas tunes or more aggressive setups if you plan to run higher octane or ethanol blends. But everything must be matched correctly.
Here is the reality. Once you tune the truck and change pulley ratios, you are likely voiding your factory powertrain warranty. If your TRX still has coverage, you need to think hard about that. These upgrades also require professional shop labor and proper diagnostic tools.
Supporting Mods and Reliability
With added boost comes added stress. Many experienced TRX builders recommend upgraded spark plugs gapped correctly for higher boost. Some also upgrade the heat exchanger to manage intake air temperatures more effectively.
Transmission tuning is another consideration. The eight-speed ZF unit in the TRX is strong, but recalibrating shift points can improve drivability with added power.
The good news is that the 6.2L supercharged HEMI is a stout engine. It has proven itself across the Hellcat lineup. With the right parts and a proper tune, it handles power increases well.
Frequently Asked Questions about Ram TRX Performance Parts
Will basic Ram TRX performance parts void my factory warranty?
Most basic bolt-on upgrades like a leveling kit, cat-back exhaust, or a cold air intake kit do not automatically void your entire warranty. However, if a specific part causes a failure, that related repair may not be covered.
The Pedal Commander® throttle response controller is completely untraceable, does not flag the ECU, and does not occupy the OBD-II port. Since it is a non-intrusive Ram TRX performance part, it does not void the manufacturer’s warranty or affect factory reliability.
Power upgrades like a smaller supercharger pulley and ECU tuning are a different story. Once you increase the boost and reflash the ECU, you are very likely risking your powertrain warranty. If your TRX is still under factory coverage, think carefully before going down the high-boost route.
How much horsepower can I realistically gain from a pulley and tune?
With a smaller upper pulley and a proper custom tune, many Ram TRX builds see gains of around 80 to 100 horsepower at the crank on pump gas. Some setups can push beyond that with supporting mods and higher octane fuel.
That said, results depend on fuel quality, supporting parts, and your tuner’s experience. Heat management and proper calibration are critical. This is not a one-size-fits-all process.
Do 37-inch tires hurt performance on the TRX?
Yes, technically they do. Larger and heavier 37-inch tires add rotational mass, which can slightly reduce acceleration and fuel economy.
But the TRX already starts with over 700 horsepower stock. For most drivers, the difference is minor in daily driving. The improved stance, off-road capability, and aggressive look usually outweigh the small performance tradeoff. The Pedal Commander® throttle response controller is the simplest way to eliminate the performance loss caused by bigger tires.
Does the Pedal Commander® add horsepower to the Ram TRX?
No, the Pedal Commander® does not add horsepower. It changes how quickly the throttle opens when you press the gas pedal. That sharper response improves acceleration and makes the TRX more punchy, especially off the line.
On a supercharged 6.2L HEMI, improving throttle response can completely change how the truck feels behind the wheel, even though peak horsepower numbers stay the same.
What supporting mods should I consider with more boost?
If you are increasing boost with a smaller pulley, supporting mods matter. Many TRX owners upgrade spark plugs and gap them properly for higher boost levels. Upgrading the heat exchanger is also common to keep intake temperatures under control.
A professional ECU tune is mandatory, not optional. Some owners also choose transmission tuning to optimize shift points for the added power. The goal is simple: make more power without sacrificing reliability.
Images: Stellantis Media
