The best accessories you can add to your truck or SUV under $500 are a tonneau cover, a set of all-weather floor liners, a quality dash cam, an FN Tuned throttle controller, a bed mat, running boards, and a set of mud flaps. All of them make an everyday difference to how useful and enjoyable your vehicle is; and none of them require a professional installer.
Here is what each one does and what to look for when buying.
Tonneau Cover: Protect What You Carry
If you own a truck and do not have a tonneau cover, you are leaving one of the most useful accessories on the table. A tonneau cover protects whatever is in your truck bed from rain, sun, and prying eyes, reduces aerodynamic drag at highway speeds which helps fuel economy, and gives the whole truck a cleaner, more finished look from the back.
For most buyers, a soft roll-up or soft tri-fold cover is the sweet spot in this budget range. TruXedo and Extang are the two brands that consistently top the recommendations on truck forums and owner communities. The TruXedo TruXport runs between $300 and $400 depending on truck bed size and is praised across thousands of reviews for its low-profile look, tight seal, and straightforward clamp-on installation that takes under an hour.
The Extang Trifecta 2.0 sits closer to $500 and adds a tri-fold design that gives you quicker partial bed access without rolling the whole cover back. Tyger Auto is the budget-friendly alternative, with solid roll-up options starting around $200, with consistently positive feedback for first-time buyers.
All-Weather Floor Liners: Protect What's Inside
Your truck or SUV's interior takes a beating every single day. Mud, water, sand, coffee, dog paws, work boots -- all of it ends up on the floor. A set of quality all-weather floor liners is one of the most practical accessories you can get.
WeatherTech is the gold standard here, and for good reason. Their DigitalFit floor liners are laser-measured for your exact make, model, and year, which means they fit the full footwell and trap everything before it can reach the carpet. They are made in the USA, come with a limited lifetime warranty, and run around $90 to $110 per row. Front and rear rows together land comfortably under $250 for most trucks and SUVs. Even if you add the 3rd row or trunk liner for an SUV, the total price still stays well below the $500 mark.
Husky Liners is a strong alternative at a slightly lower price point, with a similarly precise fit and comparable material quality. Either choice is a buy-once, keep-forever investment.
Dash Cam: The Smartest $150 You Will Spend
A dash cam is one of those accessories you hope you never actually need, and are incredibly grateful for when you do. Whether it is a fender bender in a parking lot, a road rage incident, or an insurance dispute, having footage of what actually happened changes everything. Many insurance providers now offer discounts for drivers who run one.
For trucks and SUVs, the Garmin Dash Cam Mini 3 is the most recommended entry point in the under $200 range. It runs around $150, is genuinely compact and unobtrusive, records clean 1080p footage, and the Garmin app experience is the most polished in its price class.
For buyers who want front and rear coverage, the Vantrue E1 Pro offers 4K front recording and a rear cam in the $150 to $200 range and earns strong marks for night performance. If you want the most complete setup under $400, the Vantrue N4 Pro adds a cabin camera for those who use their truck for work, towing, or long road trips where interior documentation matters.
FN Tuned Throttle Response Controller: The Accessory That Changes How It Drives
Every accessory on this list improves how your truck or SUV looks, carries, or protects. This one changes how it performs every single time you press the gas pedal, and it does it without a single permanent modification.
Every modern truck and SUV runs a drive-by-wire throttle system, meaning your gas pedal sends an electronic signal to the ECU rather than being mechanically connected to the throttle body. The factory software deliberately slows the throttle response to meet emissions standards and appeal to the broadest possible audience. The result is a pedal that feels soft and delayed, especially noticeable in daily stop-and-go driving, when merging onto a highway, or when towing and hauling where instant power delivery really matters.
The FN Tuned throttle response controller plugs directly into the accelerator pedal sensor in under 15 minutes. It recalibrates the throttle signal and sends it to the ECU without the factory restrictions, giving you immediate, precise pedal response every time you get on it. The unit is controlled wirelessly from your smartphone via Bluetooth, so there are no buttons to fiddle with and no clutter in the cab. Just stash the module in the footwell and dial everything in from the app.
Four driving modes cover every situation: Slow for fuel efficiency and slippery surfaces, Cruise for a natural one-to-one response, Fast for spirited driving, and Send It for when you want every bit of power the engine has. Each mode has nine sensitivity levels, giving you 36 total configurations to find exactly the right feel for your truck and your driving style. FN Tuned does not interfere with your factory warranty, and it is backed by US-based support.
On top of performance, the FN Tuned throttle response controller also allows you to disable the gas pedal with its built-in Anti-Theft feature. You can subscribe to the service and make your truck or SUV undriveable, even if someone breaks in and starts the engine.
Bed Mat: Stop the Slide, Protect the Finish
A tonneau cover protects your cargo from the weather. A bed mat protects both your cargo and the bed itself from damage. Anyone who has loaded tools, lumber, a cooler, or camping gear into an unlined bed has watched things slide around and scratch the paint on every turn. A bed mat stops that immediately.
Husky Liners and WeatherTech both make custom-fit bed mats for the most popular trucks, running between $80 and $130. They are thick, rubber-compound mats that grip the bed floor, cushion whatever you load on top of them, and can be cleaned off with a hose.
If you want a step up in grip and durability, a spray-in liner from Line-X or Rhino Linings runs $400 to $500 installed and is permanent, which suits owners who work their trucks hard and want complete bed protection including the side walls.
Running Boards: Entry and Exit Made Easy
Running boards are one of the most practical accessories for any lifted or full-size truck or SUV. Getting in and out of a lifted F-150, Silverado, Tundra, or 4Runner without a step is a daily inconvenience that compounds over time, especially for passengers who are just not used to climbing into a vehicle. A high-quality set of running boards solves that immediately and adds a significant boost to the vehicle's side profile at the same time.
Westin and Rough Country both offer direct bolt-on nerf bars and running boards for the most popular trucks in the $150 to $350 range, depending on style and finish. Steel oval nerf bars are the most affordable entry, while wider aluminum step boards with textured non-slip surfaces are a step up in both function and appearance.
Installation is a bolt-on affair for most trucks with no drilling required, and most buyers report completing it in under two hours with basic hand tools.
Mud Flaps: Stop the Spray, Save Your Paint
Every truck and SUV kicks up road debris, gravel, and mud onto its own rocker panels, rear quarter panels, and anything being towed behind it. Over time, that adds up to serious paint damage and sometimes even rust. Mud flaps are the cheapest, most effective way to prevent it, and they are almost always overlooked until the damage has already been done.
WeatherTech's No-Drill mud flaps are the most popular option for a good reason. They run between $60 and $230 for a set, install with no drilling or removal of any trim pieces, and are precision-fit to your specific vehicle so they sit flush and clean rather than looking like an afterthought.
Husky Liners makes a comparable product at a similar price. Both are worth having on any truck that sees regular highway miles, gravel roads, or anything resembling real weather.
Taken together, all of these accessories land well under $500 each and some under $500 combined. They cover your truck bed, floor, paint, cargo, and peace of mind. The FN Tuned throttle response controller improves how your truck/SUV drives. Start with whatever solves your biggest daily frustration and build from there.