Adjustable Upper Control Arms

Designed, engineered, tested, and assembled in Colorado, the SPC Performance 35475 Adjustable Upper Control Arms are engineered to address alignment challenges on lifted trucks. They improve suspension travel, handling, and tire wear, while also centering the tire in the wheel well for increased clearance needed for oversized tires. These control arms feature a forged aluminum construction for a balance of strength, durability, and reduced weight. They incorporate maintenance-free, sealed ball joints with an 80° articulation range and enhanced stud strength, along with free-pivoting xAxis™ sealed flex joints. These components work together to correct alignment angles, restore factory ride quality, and improve noise, vibration, and harshness (NVH) characteristics. The adjustability of these arms, combined with OE adjusters, corrects alignment angles to improve drivability and reduce tire wear. They also allow the tire to be positioned forward to maximize clearance for larger tires, potentially avoiding frame or fender modifications. The design includes additional caster provision for lifted vehicles to restore proper alignment angles and driveability, with an adjustment range of ±2.00˚ for Camber and 0.00˚ to +4.00˚ for Caster. These control arms are sold as a pair and are required one per axle. They are specifically designed for the 2024-2026 Toyota Tacoma, 2025-2026 Toyota 4Runner, 2024-2026 Toyota Land Cruiser (250 Series), and 2024-2026 Lexus GX550.