KSP F-150 Aluminum Upper Control Arm for 2-4in Leveling Lift Kits

In this review the KSP F-150 Aluminum Upper Control Arm is judged as a practical upgrade for owners who raised their truck 2-4in and need a stronger, longer-lasting front suspension arm. The single biggest reason to buy is the one-piece forged T6 aluminum construction that avoids welded weak points and resists rust, making it a solid choice for daily-driven F-150s and light off-road use. Fitment covers 2004-2020 F-150 models and select Expeditions and Navigators, and the review focuses on build quality, serviceability, and real-world fit and function.

Key Features

• One-piece forged aluminum: The T6 forged design eliminates welds and weak spots, offering a lighter but stronger arm that resists corrosion compared with iron replacements.
• Precision CNC machining: Tight dimensional control helps ensure consistent fit and alignment when swapping out worn stock arms.
• Greasable ball joint socket: A serviceable grease fitting lets new lubricant flush contaminants and reduce long-term wear and corrosion.
• Protective ball joint finishes: Heat-treated pins with a zinc-nickel coating and tower-shaped dust boots help extend ball joint life in harsh conditions.
• Polyurethane bushings: Premium bushings withstand temperature extremes better than rubber and improve handling feedback with less noise.
• Lift-corrected geometry: Designed to correct ball joint angle for 2-4in lifts, offering more range of motion for lifted applications.

Who It's For

This control arm is aimed at F-150 owners who have installed a 2-4in leveling or mild lift kit and want a more durable, rust-resistant front upper arm than stock or basic replacement parts. It suits drivers who split time between street and moderate trail use and value serviceable components and upgraded bushings for improved handling.

Those who need a part for Raptor models should look elsewhere, and buyers using very conservative stock wheels (ET44) should plan for at least a 1.5in wheel spacer or a zero-offset aftermarket wheel to avoid tire-to-arm rubbing.

Pros & Cons

Pros

• Rust-resistant forged T6 aluminum construction is lighter and stronger than uncoated steel arms.
• Serviceable greasable socket and protective ball joint covers help extend component life.
• Polyurethane bushings provide firmer handling, better temperature tolerance, and reduced noise.

Cons

• Some customers have reported ball joint boot durability issues, so long-term boot performance can vary.
• May require wheel spacers or zero-offset wheels on conservative stock wheels to prevent rubbing.

Specifications

Fitment	F-150 2004-2020; Expedition 2006-2022; Navigator 2006-2022
Lift compatibility	2-4in leveling or lift kits
Material	Forged T6 aluminum, CNC machined
Bushings	Premium polyurethane with lubrication groove
Ball joint	Heat-treated pin with zinc-nickel coating and tower dust boot
Design	One-piece, no welds; magnetic particle inspected

Our Verdict

The KSP F-150 Aluminum Upper Control Arm is a worthwhile upgrade for lifted F-150 owners who want a rust-resistant, serviceable arm with improved bushings and corrected geometry for 2-4in lifts. It delivers solid build quality and practical features at an affordable price, though a small number of users note ball joint boot issues and some wheel fitment considerations.

Frequently Asked Questions

Will this fit a Raptor?
No. This control arm is not compatible with Raptor models; it is designed for standard F-150s from 2004-2020 and select Expeditions and Navigators.

Do I need wheel spacers?
If you run conservative stock wheels with ET44, you will likely need at least a 1.5in spacer or a zero-offset aftermarket wheel to avoid tire rubbing.

Can the ball joint be serviced?
Yes. The arm features a greasable socket and protective dust boots, allowing periodic lubrication to reduce wear and contamination.