2017 Toyota 4Runner Upper Control Arm

Upper Control Arms for 2017 Toyota 4Runner

The 2017 4Runner shares the 5th gen platform's factory upper control arm design, which limits ball joint travel and uses sealed bushings that can't be serviced. JBA's adjustable upper control arm assembly replaces both OEM front upper arms with a rebuildable system built for present model years and beyond. Each arm kit includes CNC-machined Max 90 Ball Joints with 90-degree articulation, EZ Lube Bushings with 8 grease ports and pressure relief valves, and all mounting hardware. You add alignment adjustability and field serviceability the factory system can't match.

Why Replace Factory Control Arms

OEM upper control arms on the 2017 4Runner use sealed ball joints and rubber bushings that wear internally without visible warning. When you add a lift kit, the factory arm geometry forces the ball joint into a binding angle that accelerates wear. Symptoms of a failing control arm include clunking over bumps, steering wander, and uneven tire wear. JBA's arm upper design corrects suspension geometry after a lift and lets you grease every ball joint and bushing contact point. The related benefit is you rebuild components on your schedule instead of replacing the entire arm assembly when a sealed joint fails.

Built for Lift-Equipped 5th Gen 4Runner

JBA's 2024 Toyota 4Runner upper control arm is engineered for vehicles running 2-4 inch lifts. The adjustable upper design restores caster angle and corrects camber after you lift the front suspension. Each arm is CNC-bent from DOM tubing and powder-coated in JBA Red. The forged aluminum ball joint housing bolts directly to the factory knuckle. This is the same series used in jungle fleet operations where control arm failure isn't an inconvenience but a safety crisis.

Max 90 Ball Joints and EZ Lube Components

JBA machines every Max 90 Ball Joint from 4140 chromoly steel with a 90-degree articulation range. That's 30 degrees more travel than sealed OEM ball joints. The stud diameter and taper match TRD and factory knuckle specs. Eight individual grease ports feed the ball joint and bushing interfaces. Pressure relief valves prevent over-greasing. You service each contact point without disassembly. When wear occurs after years of use, you replace the ball joint or bushing individually instead of buying a new arm. This is how you reduce cost per mile over a 10-year service life.

Rebuildable Design Lowers Long-Term Price

Sealed control arms from other manufacturers require full replacement when internal components wear. JBA's rebuildable arm kit lets you press out worn bushings, unbolt the ball joint housing, and install new components using basic shop tools. Replacement ball joints and bushings are available at a fraction of the price of a complete arm assembly. Fleet operators running Toyota Land Cruiser and 4Runner platforms in remote environments have documented rebuild intervals exceeding 100,000 miles. The lifetime structural warranty covers the arm tube and mounting points for as long as you own the vehicle.

Installation and Alignment Questions

Front upper control arm replacement on a 2017 4Runner takes 2-3 hours with hand tools. You'll need a ball joint separator, torque wrench, and alignment specs for your lift height. Each arm ships with detailed instructions and all required hardware. Post-install alignment is required. Set caster between +3.5 and +4.5 degrees and camber within 0.5 degrees of zero for balanced tire wear. Most shops charge $100-$150 for a front alignment. Customer reviews confirm the arms install without modification to factory mounting points.

Warranty and Fleet Verification

JBA backs every upper control arm for 2025 4Runner and 2017 Toyota 4Runner with a lifetime structural warranty covering the arm tube, mounting brackets, and all welds. Ball joints and bushings are wear items covered for the first year. This warranty has been in place since 2003 when JBA built the original aftermarket UCA for the Jeep Liberty. The same engineering standards apply to every vehicle series we support. A Central American expedition company has run JBA upper control arms on a 40-vehicle jungle fleet for 6 years with zero structural failures. That's the proof point behind the warranty.

Compare to Factory Replacement Cost

OEM upper control arm replacement for a 2017 4Runner costs $400-$600 per side through Toyota parts channels, not including labor. How much does it cost to replace a control arm on a 4Runner when you factor in alignment and shop time? Most owners report $800-$1,200 total for both sides. JBA's adjustable upper control arms deliver rebuildable construction, lift correction, and the lifetime structural warranty at a comparable upfront price. The difference is you're not replacing sealed components every 60,000-80,000 miles—and the same quality engineering applies to the 2026 Toyota 4Runner upper control arm.

Shop JBA's 2017 Toyota 4Runner upper control arm kit backed by a lifetime structural warranty. Built in the USA for lift-equipped 5th gen 4Runner owners who maintain their own suspension system.