Lifting a Toyota 4Runner: Spacers, Coilovers, and Full Kits Explained
A lift is the most-searched 4Runner modification, and the choices are wider than they look. The front is an independent suspension running a coilover; the rear is a solid axle on coil springs. You can level the truck with spacers for the price of a tank of gas, or build a long-travel front end that costs more than a used motorcycle. Here's how to read what your build actually needs and what each path costs.
For most 5th-gen (2010–2024) 4Runners, the build that holds up is a 2–3 inch front lift on quality coilovers with a matched rear coil and shock, running 33-inch tires (285/70R17). That clears the tire, improves the ride over stock, and stays inside the geometry the truck can handle without exotic secondary parts. Spacers are a real option for leveling the factory rake on a budget — they cost little and bolt on in an afternoon — but understand they add ride height by preloading the existing strut, not travel or damping quality. Past 3 inches of front lift you're into upper control arms, CV angle management, and diminishing returns for a daily-driven truck.
How the 4Runner suspension is actually laid out
Before you buy anything, it helps to know what you're lifting. The 4Runner is not a leaf-sprung solid-axle truck front and rear like an old pickup. From the 4th generation (N210, 2003–2009) onward, the front is an independent double-wishbone suspension built around a coilover — a coil spring wrapped around a shock absorber, mounted between the upper and lower control arms. The rear is a solid axle located by a four-link with a panhard bar (track bar), sprung on coil springs with separate shocks.
That layout drives every decision below. Because the front is independent, lifting it changes the angle of the CV axles and the camber/caster geometry — which is why a tall front lift needs upper control arms to bring alignment back into range. Because the rear is coil-sprung (not leaf), you raise it with taller coil springs or coil spacers and longer shocks, not add-a-leaf packs. And because it's an independent front, the 4Runner does not suffer from death wobble the way a solid-front-axle Jeep or older Bronco does — a real advantage that's worth knowing when you read panicked forum threads written by people coming from other platforms.
One trim-specific wrinkle: 4Runners with KDSS (Kinetic Dynamic Suspension System — standard on TRD Off-Road and TRD Pro from the 5th gen) have a hydraulically linked sway bar setup. KDSS changes the install (the system has to be relaxed before you unbolt the sway bars) and affects how the truck settles after a lift. It's manageable, but it's a step a non-KDSS truck skips. If your truck has KDSS, budget extra install time and read the kit instructions for the KDSS-specific procedure.
Path 1: Leveling spacers — the budget entry
A leveling kit uses a spacer that sits on top of the factory front coilover, pushing the whole strut assembly down relative to the body and raising the front of the truck. Most 4Runners leave the factory with a nose-down rake — the front sits lower than the rear. A 2–3 inch front spacer levels that out so the truck sits flat, which is the look most people are actually after, and clears enough room for a 33-inch tire with minor fender liner trimming.
What a spacer does not do is add suspension travel or improve damping. You're keeping the factory shock and spring; you're preloading the spring and relocating the assembly. Ride quality stays roughly stock, or gets marginally firmer because you've added preload. For a truck that lives mostly on pavement and gravel roads with the occasional trail, that tradeoff is honest and fine. For a truck that sees washboard, whoops, and high-speed dirt, a spacer leaves performance on the table.
Cost: $100–250 for a front spacer kit (brands like Rough Country, Supreme Suspensions, and the better-regarded Toytec aluminum spacers). Rear lift to match comes from a coil spacer or a small block, often included in a combo kit. Install: a half to full day in the driveway with hand tools and a spring compressor is not required because you're not separating the coilover — you're shimming above it. You will need an alignment afterward.
If your only goal is to fit slightly larger tires and sit level, a full coilover kit is more than the job requires. Spacers get you there for a quarter of the price. Buy the coilovers when you actually want the ride and travel improvement — not because a forum told you spacers are "cheap and nasty." For a lot of 4Runner owners, a spacer is the right and final answer.
Path 2: Coilovers — where the real lift lives
A coilover replaces the entire factory front strut assembly with a purpose-built unit: a better shock, a spring rate chosen for added weight (bumper, winch, armor), and on the better units, adjustable ride height and rebuildable internals. This is the upgrade that changes how the truck drives, not the way it looks. A good 2–3 inch coilover makes a heavy, armored 4Runner ride better than stock while sitting taller — because the damping is matched to the load instead of fighting it.
The market sorts into rough tiers:
Value performance — Bilstein 6112 (front) + 5160 (rear): The default recommendation for a reason. The 6112 is an adjustable-height monotube coilover; paired with Bilstein 5160 reservoir shocks in the rear and a set of rear springs, it delivers most of the ride benefit of premium kits at roughly $700–1,200 for the four corners plus springs. For a daily-driven, occasionally-wheeled 4Runner, this is the sweet spot most builds should start and often end at.
Mid-tier touring/overland — Old Man Emu BP-51, Dobinsons IMS/MRR: Internal-bypass and remote-reservoir options tuned for loaded touring rigs. The OME BP-51 is a bypass coilover with external compression and rebound adjustment, popular on overland builds carrying weight. Expect roughly $1,500–2,500 for a full setup.
Premium / high-speed off-road — Icon, King, Fox 2.5: Rebuildable, reservoir-equipped, often with compression adjusters and the option to add hydraulic bump stops. These earn their keep on fast desert terrain and heavily loaded expedition rigs. A full setup with rear bumps and the supporting parts runs $2,500–3,800+. For a truck that mostly sees the highway and weekend trails, that's more capability than the use case demands — buy it if you're chasing whoops at speed, not because it's the top of the chart.
Install: A coilover swap separates the front strut, which means a spring compressor on pre-assembled units or careful handling of pre-built coilovers, plus disconnecting the sway bar, lower ball joint or sway bar end links, and the CV axle clearance. It's a full weekend job for a first-timer, less if you've done it before. KDSS trucks add the sway-bar-relaxing step. Always finish with a professional alignment.
The rear: coils, not leaves
The rear of a 4th- or 5th-gen 4Runner is sprung on coils, so you lift it with taller coil springs or, for small lifts, coil spacers, paired with longer shocks. Taller springs are the better answer above about an inch because they preserve down-travel and ride quality; spacers preload the existing spring and can stiffen the ride and eat into droop if pushed too far. Match the rear lift to the front so the truck sits level or with a slight rake — over-lifting the rear steepens the panhard bar angle and can shift the axle off-center.
If you carry weight in the back — drawers, a fridge, a roof tent's worth of gear, a rear bumper and tire carrier — choose a rear spring rated for that load (often sold as "medium" or "heavy" / "constant load" springs by OME and Dobinsons). A spring sized for an empty truck will sag under a loaded one, undoing the lift and the geometry you paid for. Some 5th-gen trucks also have the X-REAS hydraulic shock-linking system on certain trims; if yours does, confirm your shock choice is compatible or plan to delete X-REAS as part of the build.
The secondary parts a tall lift actually needs
This is where budgets blow up, and where honest planning saves money. A 2-inch lift on a non-KDSS truck can be close to a standalone job. A 3-inch-plus lift pulls in supporting parts you should price in from the start:
Upper control arms (UCAs): At roughly 2.5–3 inches of front lift, the factory UCAs run out of camber/caster adjustment range and can contact the coilover at full stuff. Aftermarket UCAs (uniball or bushing-type) restore alignment range and clearance. Budget $300–700. Uniball arms ride a touch harsher and need periodic service; bushing arms are quieter and lower-maintenance.
CV axle angle / diff drop: Lifting the independent front steepens the CV axle angle. Too steep and the CV boots wear and the joints bind at full droop. A diff-drop kit lowers the front differential to relax the angle, and is common on 3-inch-plus builds. Budget $100–250.
Sway bar relocate / extended end links and brake lines: Bigger lifts can need longer sway bar links and, at the extreme, extended brake lines so the line isn't pulled tight at full droop. Small parts, but skipping them causes real problems.
Re-gear and speedo recalibration: Bigger tires (33s and up) slow the truck down, hurt mileage, and throw off the speedometer. The 5th-gen V6 with stock 3.73 gears feels noticeably sluggish on 35s; many owners re-gear to 4.56 or 4.88 to recover drivability. Run the numbers before you commit to a tire size — our gear ratio calculator shows the tradeoff.
Tire fit: what each lift actually clears
The honest tire-to-lift map for a 5th-gen 4Runner looks like this. Stock or a small spacer clears a 32-inch tire (265/70R17 or 265/75R16) with little or no trimming. A 2–3 inch lift clears a 33 (285/70R17) with some fender liner and pinch-weld trimming and proper wheel offset (around -12 to +4mm, or a spacer to push the tire out). A 35-inch tire (315/70R17 or 285/75R17) is possible but is a different project — it wants the taller end of the lift range, more aggressive trimming or a body mount chop, the re-gear above, and usually wider/lower-offset wheels. Going to 35s "because they fit" without the supporting work leads to rubbing on stuff and street, and a truck that feels gutless until it's re-geared.
Putting it together: three honest builds
The level-and-clear (budget): Front leveling spacer + matched rear coil spacer, 33-inch all-terrains on stock wheels, alignment. Sits flat, clears the tire, rides near stock. Roughly $250–600 all-in plus tires. The right call for a daily driver that wants the look and a little more clearance.
The do-it-once (mid): Bilstein 6112/5160 with load-rated rear springs at 2.5–3 inches, UCAs, diff drop, 33s on -12 offset wheels, alignment. Rides better than stock, handles weight, capable on real trails. Roughly $1,800–2,800 with parts and tires. This is the build most serious 4Runner owners land on and keep.
The expedition / high-speed (premium): King or Fox 2.5 reservoir coilovers with rear hydraulic bumps, OME or Dobinsons heavy rear, UCAs, diff drop, re-gear to 4.88, 35s. Built for loaded touring or fast dirt. $5,000+ before tires and gears. Buy it for the use case, not the chart position.
What to watch for
CV boots after a tall lift. Inspect them after the first few hundred miles. A torn boot from too-steep a CV angle leads to a failed axle. If you went past 3 inches without a diff drop, this is the first place trouble shows.
Alignment is not optional. Any lift changes camber, caster, and toe. Driving on a fresh lift without an alignment wears tires fast and can make the truck wander. Budget the alignment into the job, every time.
KDSS settling. KDSS trucks can sit unevenly side-to-side after a lift until the system equalizes; the fix is the KDSS bleed/relax procedure, not more spacers. Don't chase a lean with shims before you've done the KDSS step.
Don't over-lift the rear. A rear sitting higher than the front steepens the panhard bar and pushes the axle off-center. Match front and rear, or keep a slight nose-down-to-level stance.
The bottom line
If you want the truck to sit level and clear a 33 on a budget, spacers do that honestly and you can stop there. If you want the truck to ride better while sitting taller and carrying weight, coilovers are where the money belongs — and a Bilstein 6112/5160 setup with UCAs and a diff drop is the build most 4Runners should aim for. Past 3 inches and into 35s, the lift stops being a bolt-on and becomes a project with re-gearing, trimming, and supporting parts. None of it is beyond a patient DIYer with a weekend and a torque wrench — plan the whole thing before you buy the first part, and you'll spend once instead of three times.