2013 Toyota 4Runner Upper Control Arms

Upper Control Arms Engineered for 2013 4Runner Lift Kits

Your 2013 Toyota 4Runner's factory upper control arms weren't designed for the geometry changes that come with a 2-inch, 3-inch, or larger lift kit. When you add lift, the factory arm forces your ball joints into extreme angles, accelerating wear and limiting suspension travel. JBA upper control arms restore proper alignment and deliver the articulation your lifted 4Runner needs on the trail, just like the 2015 Toyota 4Runner upper control arm does for the following model year.

These arms fit the 2010-2024 4Runner platform, along with the FJ Cruiser, Tacoma, and Lexus GX460 and GX470 models that share the same front suspension architecture. If you're running a TRD Pro, SR5, or any trim with an aftermarket lift, these control arms correct camber and caster while maintaining full steering range.

EZ Lube Bushings With Eight Grease Points

JBA's proprietary EZ Lube Bushings replace the sealed, non-serviceable bushings found on factory and most aftermarket upper control arms. Each bushing features 8 individual grease ports with integrated pressure relief valves. You can service them on the trail in under 10 minutes with a standard grease gun.

This design eliminates the most common failure point in lifted suspension systems. Sealed bushings bind, crack, and fail because they can't adapt to the increased articulation demands of off-road use. When a sealed bushing fails 200 miles into the backcountry, you're done. When an EZ Lube Bushing needs service, you grease it and keep moving.

Max 90 Ball Joints Built From Chromoly

Every JBA upper control arm ships with Max 90 Ball Joints CNC-machined from 4140 chromoly steel. These joints deliver 90 degrees of total articulation, 50% more than the factory spec. The stud is heat-treated and shot-peened for fatigue resistance. The housing is fully rebuildable.

Ball joints are a wear item, especially on a lifted 4Runner that sees trail use. JBA designed these joints to be serviced and rebuilt, not replaced. When you need to refresh them after 50,000 miles of hard use, you replace the internal components and keep the same housing. Replacement kits cost a fraction of new ball joints, and you're not waiting on shipping or dealing with a failed joint mid-trip.

Lifetime Structural Warranty on Every Arm

JBA backs every upper control arm with a lifetime structural warranty. If the arm itself fails due to a material or manufacturing defect, they replace it. This warranty has covered arms deployed in jungle fleet operations, desert rock crawls, and expedition builds that log 100,000+ miles in remote environments.

The warranty doesn't cover wear items like bushings or ball joints, because those are designed to be serviced. It covers the structural integrity of the arm, the welds, and the material. That's the difference between a sealed component you throw away when it fails and a rebuildable system you maintain for the life of your 4Runner.

Direct Fit for Lifted 4Runner Suspension

These upper control arms install using factory mounting points. No drilling, no frame modifications, no custom brackets. They work with 2-inch to 3-inch lift kits from any manufacturer and integrate with stock or aftermarket coilovers, shocks, and rear suspension components.

Installation takes 2-3 hours in a home garage with hand tools. You'll need an alignment immediately after install to dial in camber and caster for your specific lift height and tire size. Once aligned, these arms maintain geometry through the full range of suspension travel, whether you're crawling rocks or running highway speeds through the desert.

Why Serviceable Components Matter Off-Road

Sealed control arms and ball joints are fine for street-driven vehicles with stock suspension. They fail predictably in lifted, off-road applications because they can't handle the increased load and articulation. When they fail, you replace the entire assembly.

JBA's approach is different. Every component is designed to be serviced in the field or rebuilt at home. You carry a grease gun and a rebuild kit, not a spare control arm. That's how you keep a 4Runner operational in environments where parts availability is measured in weeks, not hours. It's why expedition operators and fleet managers spec these arms for vehicles that can't afford downtime.

Shop JBA's Gen 4.5 upper control arms for your 2013 Toyota 4Runner. Every arm ships with EZ Lube Bushings, Max 90 Ball Joints, and a lifetime structural warranty.