KSP 4Runner Upper Control Arm 2-4in Adjustable - Durable Lifted Fit

In this review of the KSP 4Runner Upper Control Arm, the bottom line is straightforward: this is a durable, adjustable replacement arm intended for owners who have lifted a Toyota or Lexus SUV 2-4in and need a stronger, serviceable upper control arm. The reviewer found the arm built from powder coated, thickened cold-drawn steel with a CNC machined pipe and heat treated alloy ball pin, all of which point to long term durability and improved chassis correction after a lift. The unit is a direct-fit aftermarket replacement for a range of Toyota and Lexus models, and the review focuses on fitment, durability, ease of greasing, and real-world value.

Key Features

• Vehicle fitment: Designed to replace factory upper arms on multiple Toyota and Lexus models so owners with 2-4in lifts can correct suspension geometry.
• Adjustable construction: The adjustable 2-4in length capability allows alignment correction after a lift without replacing multiple suspension components.
• Durable materials: Powder coated, thickened cold-drawn steel tubing and CNC machined pipe increase strength and resist corrosion in daily use.
• Greaseable ball joint: A greaseable socket with a zerk fitting and a pre-installed dust boot helps flush contaminants and extend service life when maintained properly.
• Enhanced ball pin: Heat treated alloy steel ball pin with a hex hole simplifies installation and provides improved fatigue resistance over stock parts.
• PU bushings: Polyurethane bushings offer improved handling response and longevity in a variety of temperatures.

Who It's For

The KSP upper control arm is best for owners of 2003-2009 GX J120, 2009+ GX J150, 2006-2014 FJ Cruiser, 2003-2009 4Runner N210, 2009+ 4Runner N280, and 2002-2009 or 2009+ Land Cruiser Prado J120/J150 who have lifted their truck 2-4in and need a stronger, adjustable front upper arm. It suits DIY mechanics and shops who want a serviceable, greaseable ball joint and corrosion resistant finish.

Those who should look elsewhere include owners who have smaller or no lifts, since stock arms may suffice, and buyers who require OE-certified parts for factory warranty restoration, as this is an aftermarket replacement.

Pros & Cons

Pros

• Sturdy construction with powder coated finish reduces corrosion and improves longevity compared with stock arms.
• Greaseable ball joint and pre-installed dust boot allow maintenance to flush contaminants and extend life.
• Adjustability and hex hole on the ball pin make alignment and installation easier after a 2-4in lift.
• PU bushings enhance driving performance and perform well in varied temperatures.

Cons

• Fitment is generally good but some customers reported mixed fit results, so careful compatibility checks are required before purchase.
• The zerk fitting must not be over-tightened and the new ball joint does not need extra grease for the first year, which requires attention to the maintenance notes.

Specifications

Our Verdict

The KSP 4Runner Upper Control Arm is a practical, value-oriented solution for lifted Toyota and Lexus SUVs that need corrected suspension geometry and a tougher than stock arm. With durable materials, a greaseable ball joint, and adjustable length for 2-4in lifts, it is well suited to DIY installers and shops seeking improved longevity and alignment capability, provided buyers confirm exact year and model fitment before ordering.

Frequently Asked Questions

Will this fit my lifted 4Runner?
Check the listed compatible models and confirm your model year and lift height, as fitment is specific to the vehicles named in the product description.

Do I need to add grease to the ball joint right away?
The new ball joint does not require extra grease within the first year; use the zerk fitting for maintenance afterward and avoid over-tightening the zerk.

How does the finish hold up?
The powder coated surface and zinc-nickel treated components are intended to resist rust and corrosion in normal road use.