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🧾 Overview
The Bilstein B8 Upper Control Arm Kit is a direct-fit performance upgrade designed to replace factory upper control arms on lifted Toyota and Lexus trucks and SUVs. Engineered to restore proper suspension geometry after a lift, these control arms correct caster alignment for improved straight-line stability, steering feel, and overall handling.
Constructed from 4130 chromoly steel with a durable black powder coat finish, the B8 control arms feature a tubular design that increases spring and shock clearance while reducing stress on suspension components. Improved pivot angles allow for increased wheel travel, making them ideal for both on-road driving and off-road use.
Greasable polyurethane bushings and heavy-duty ball joints deliver a balance of durability, ride quality, and low maintenance. Designed to integrate seamlessly with Bilstein shocks and coilover systems, this kit includes all necessary hardware and detailed installation instructions for a straightforward bolt-on upgrade.
✔ Corrects caster alignment on lifted vehicles
✔ Improves wheel travel and suspension geometry
✔ Tubular chromoly steel construction
✔ Direct-fit, bolt-on replacement
🛠 Installation
- Direct bolt-on replacement for factory upper control arms
- Uses factory mounting locations
- No cutting or welding required
- Alignment required after installation
📌 Specs
- Corrected caster geometry for lifted suspensions
- Improved straight-line stability and steering feel
- Increased wheel travel and reduced joint stress
- Tubular design for added spring and shock clearance
- 4130 chromoly steel construction
- Black powder-coated finish for corrosion resistance
- Greasable polyurethane bushings for reduced maintenance
- Heavy-duty, serviceable ball joints
- Fully compatible with Bilstein shocks and coilovers
- All components are replaceable
- 🧠 Technical Specifications
- Material: 4130 chromoly steel
- Design: Tubular upper control arms
- Bushings: Greasable polyurethane
- Ball Joints: Heavy-duty, serviceable
- Finish: Black powder coat
- Installation Type: Bolt-on
📦 What’s Included
- (2) Bilstein B8 Upper Control Arms
- Greasable polyurethane bushings (pre-installed)
- Heavy-duty ball joints (pre-installed)
- All required mounting hardware
- Installation instructions
🛡 Warranty
- Manufacturer Limited Warranty
⚠️ Fitment Notes
- Lexus GX460 (2010–2023)
- Lexus GX470 (2003–2009)
- Toyota 4Runner (2003–2024)
- Toyota FJ Cruiser (2007–2014)
- Important Notes:
- Designed for lifted suspensions
- Wheel alignment required after installation