The best first mods for a new Toyota 4Runner are, in order: all-terrain tires, a suspension lift, underbody skid plates, a throttle response controller, and a roof rack or lighting upgrade. Get these right, and your 4Runner will be transformed from a capable SUV into a genuine trail-ready machine that still drives great on Monday morning.
Now, if you want to know which brands to trust, why the order matters, and what happens to your throttle feel when you start bolting on bigger tires and lifted suspension -- read on. This is the part that saves you money and a lot of headache.
The 5th Gen (2010 to 2024) has one of the deepest aftermarket support of any vehicle on the road. The 6th Gen, which launched for 2025 with a new powertrain and a fresh chassis, already has a fast-growing aftermarket community rallying behind it.
Start Here: All-Terrain Tires
Before you spend a dollar on anything, swap out the tires. This is the single most impactful first mod you can make.
The stock tires that come on most 4Runner trims are competent all-season rubber, not serious off-road performers. The moment you put a proper all-terrain tire on, the character of the entire vehicle changes. You get more traction on gravel, better bite on wet rock, and a look that actually matches what the 4Runner is supposed to be.
The three top-recommended brands are BFGoodrich, Toyo, and Falken. The BFGoodrich All-Terrain T/A KO2 and the newer KO3 are perennial favorites with a track record stretching back decades. The Toyo Open Country AT III is widely praised for its balance between trail grip and quiet highway manners, and it is the tire Toyota itself puts on TRD Pro and Trailhunter models from the factory. The Falken Wildpeak AT4W has gained serious ground in recent years, particularly in cold and snowy climates where its deep siping gives it an edge over the competition.
Go with a reputable shop for mounting and balancing, and plan to rotate every 5,000 miles to get the full life out of them.
Lift the Suspension, Claim the Ground Clearance
Once the tires are sorted, the suspension is where the real capability gains happen. A quality lift kit transforms the 4Runner's stance, opens up even larger tire options, and dramatically improves articulation on the trail. This is also where you need to be careful about who you buy from and what kind of lift you choose.
For most first-time builders, a 2 to 3 inch lift from a reputable brand hits the sweet spot. Westcott Designs is widely regarded as the gold standard for 4Runner-specific suspension, particularly for owners who want to tune their setup over time. Dobinsons offers excellent value with a range of kits from entry-level coilover spacers to their full adjustable MRR long-travel systems. ReadyLIFT's SST2.1 system, which pairs their own tubular upper control arms with Falcon 2.1 monotube shocks, is a strong bolt-on choice for the 6th Gen (N500). On a tighter budget, Rough Country and Supreme Suspensions offer leveling kits that get you into a proper stance without a massive initial investment.
One thing the internet will not always tell you upfront: going bigger on tires and adding suspension height changes how the throttle feels. The added unsprung weight from larger tires, combined with the drivetrain angles introduced by a lift, creates a noticeable increase in throttle lag and low-end sluggishness. Your 4Runner does not lose power; it simply struggles to deliver it. Plus, the modern drive-by-wire gas pedal is already laggy to begin with. That is a problem worth solving before it frustrates you on the trail.
Fix the 4Runner Throttle Lag: Pedal Commander®
Pedal Commander® is the world's best-selling throttle response controller, and it plugs directly into the pedal position sensor with OEM-quality plugs. What it does is eliminate the delay that Toyota programs into the electronic throttle system, giving you sharper, more immediate pedal response across four adjustable modes: Eco, City, Sport, and Sport+. Each mode has 9 sensitivity levels, so you are not stuck with one setting. You can dial in exactly how your 4R responds to your right foot, whether you are on the highway, crawling a trail, or towing.
The reason this becomes especially important after a suspension lift and tire upgrade is straightforward: those mods add rotating mass and change your drivetrain geometry, both of which further dull the truck's initial response compared to stock. Pedal Commander® compensates for exactly that. It gives your vehicle a snappy, confident throttle feel.
It also plays well with everything else you might add to the truck. If you have already had a professional tune done, Pedal Commander® works alongside it. The tune handles fueling and ignition timing; the Pedal Commander® handles the throttle sensitivity signal itself. They operate on different layers of the system, so the combination delivers more than either does alone.
What makes Pedal Commander® even more compelling as a first mod is that it doubles as a vehicle security tool. Through the Pedal Commander® app, you can activate Anti-Theft mode with a single tap, which completely disables the gas pedal. For a 4Runner that spends nights in trailhead parking lots and campground lots far from home, that kind of peace of mind is worth every cent of it.
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Protect What Matters: Skid Plates
A stock 4Runner's underside protection is surprisingly minimal for a truck that is marketed as a trail machine. The plastic belly pan that comes on most trims will not survive a serious encounter with a rock shelf, and the transfer case and fuel tank are more exposed than most owners realize until they get into trouble.
Adding proper steel skid plates is essential. RCI Offroad makes CNC-laser-cut steel and aluminum options that cover the engine, transfer case, and fuel tank for the 4Runner, and they are built in the USA. For a factory-style option with a perfect OEM fit, the genuine Toyota TRD skid plate designed for the 2025 platform is a popular and clean choice that many owners pair with the cross-member bracket for complete coverage.
If you plan to lift the truck and run larger tires, do the skid plates at the same time. Once you start taking trails that justify those upgrades, you will be glad the protection is already in place.
See the Trail: LED Light Bars and Auxiliary Lighting
The 4Runner's factory headlights are adequate for road driving and not much else. On a forest road at night or during a late-afternoon trail run in the mountains, the difference between stock lighting and a proper auxiliary setup is the difference between confidence and guesswork.
For most builds, a 20 to 30 inch LED light bar mounted to the roof or bull bar handles the forward throw. Baja Designs, KC HiLiTES, and Rigid Industries are the three brands the serious off-road community recommends. Baja Designs' Squadron Pro pods are a popular addition for their tight beam pattern and brutal output; Rigid's 20-inch Radiance bar is a common choice for builders who want maximum forward throw without a complicated harness.
Most of these systems come with everything needed for a clean install, including relay harnesses and rocker switches.
Add a Roof Rack for the Overland Life
A roof rack opens up the 4Runner's capability in many ways. It is where your recovery gear lives when the interior is packed. It is where the rooftop tent mounts if that is your direction. It is the anchor point for awnings, spare tire carriers, and lighting brackets.
Prinsu Design Studio makes one of the most respected full-length aluminum racks for both the 5th and 6th Gen 4Runner, and their mounting system integrates cleanly with the factory rain gutters. Sherpa Equipment Company's Capitol rack is another well-regarded option, built with a slightly more aggressive aesthetic that suits builds aimed at serious overlanding use. Both are made in the United States and carry strong reputations in the trail community for surviving years of hard use without sagging or creaking.
Avoid cheap racks. The weight savings are minimal and the consequences of a rack failure with gear loaded on the roof of a trail rig are not worth the money you saved at checkout.
The Right Order Makes All the Difference
One last thing worth saying directly: the order in which you do these mods matters. Tires first, because they change everything and reveal what the rest of your build actually needs. Suspension second, because it defines your tire clearance and trail geometry. Skid plates third, because once you start going places that justify the lift, you are also going places that can damage the underside. Pedal Commander®, alongside the suspension and tires, because the throttle response issue shows up the moment those upgrades go on. Lighting and a rack when you are ready to stay out longer and carry more gear.
The 4Runner is one of the most rewarding platforms in the off-road scene. These first mods are not the end of the build; they are the foundation that everything else gets bolted onto.
