SPC Performance Adjustable Upper Control Arms for 2003-2024 4Runner – Pair (Part #35480)

SPC Adjustable Upper Control Arms for 2003–2024 Toyota 4Runner

Part Number: 35480
Includes: Pair of adjustable upper control arms
The SPC Performance Adjustable Upper Control Arms are engineered to correct alignment geometry on lifted Toyota 4Runner models while improving handling, suspension travel, and tire clearance. Built from forged steel and assembled in the USA, these control arms are designed for both daily driving and demanding off-road use without compromising ride quality.
When a 4Runner is lifted, factory caster and camber angles shift outside of specification. This can cause wandering steering, poor return-to-center, and uneven tire wear. SPC’s adjustable upper control arms restore proper alignment by adding caster and increasing adjustment range, allowing the front suspension to be correctly centered after lifting.

Design & Performance Features

• Heavy-duty forged steel construction for strength and durability
• Built-in positive caster correction for lifted suspensions
• Improved clearance around the coil spring bucket
• Allows forward wheel positioning for larger tire clearance
• Compatible with knuckle gusset kits

Ball Joint & Bushing Technology

SPC uses a sealed ball joint combined with their xAxis flex joint system to deliver long-term durability while maintaining ride comfort.

• 25% larger ball joint stud than OE for increased strength
• E-Nickel coating for corrosion resistance
• Fully sealed, maintenance-free design
• One-piece polymer race for quiet operation
• Up to 80° of articulation
• xAxis bonded rubber bushings for improved NVH control

Alignment Adjustment Range

• Camber: ±2.0°
• Caster: 0.0° to +4.0°

This adjustment range allows proper alignment on lifted vehicles and enables forward wheel positioning to improve clearance for up to 33-inch tires without trimming or frame modification.

Fitment Notes

• Fits Toyota 4Runner (2003–2024)
• Sold as a pair
• One set required per vehicle
• Replacement lower control arm cams (if needed): SPC #25440 or #25435

Patent: US Patent No. 7,513,514

Frequently Asked Questions

Why do lifted 4Runners need adjustable upper control arms?
Lifting reduces factory caster and camber, which can cause poor steering feel and uneven tire wear. Adjustable UCAs restore proper alignment and improve stability.

Will these arms improve tire clearance?
Yes. The design allows the wheel to be moved forward in the wheel well, improving clearance for up to 33″ tires.

Are these control arms maintenance-free?
Yes. The sealed ball joint and xAxis bushings do not require greasing.

Do they affect ride quality?
No. The bonded rubber bushings maintain factory ride comfort while allowing increased articulation.

Installation Instructions:

Download SPC 35480 Installation Guide (PDF)