Tubular Upper Control Arms - 6th Gen 4Runner

The Peak Tubular Upper Control Arms for the 2025+ Toyota 4Runner add positive caster and improved droop clearance to restore alignment range and steering stability on lifted setups. Built from heavy-duty tubular steel, they use serviceable bushings and 1″ uniballs for strength, precision, and long-term reliability.

Features:

• Added positive caster for proper alignment on lifted vehicles
• Repositioned pivot angles to reduce joint stress and improve travel
• 1″ stainless-steel uniballs with 17-4 stainless misalignment spacers
• Serviceable delrin bushings with grease fittings
• Tubular steel construction with durable finish
• Direct bolt-on design

Tubular UCA Design

These arms are designed to correct geometry on lifted 4Runners by adding caster and optimizing pivot angles. The tubular construction provides high strength with controlled weight, while the powder-coated finish helps resist corrosion in all-weather use.

Alignment & Geometry Benefits

Additional caster improves on-center feel and straight-line stability, and the revised pivot geometry helps maintain tire clearance through the suspension arc. The result is a more predictable, stable steering feel after a front lift.

Bolt-On Installation & Maintenance

The UCAs install at factory mounting points with common tools. After installation, a professional alignment is recommended. Routine servicing is simple thanks to the greaseable bushings and easily inspectable uniball hardware.