Rear Upper Control Arms

The GKTech IS300 Rear Upper Control Arms (RUCAs) offer an adjustable solution for tuning your vehicle's rear camber, a common issue when lowering a car. Excessive negative camber can significantly reduce tire contact and available traction. These RUCAs serve as a direct replacement for the factory arms, effectively correcting this problem. Constructed from robust 4130 Chromoly sheet metal with added ribbing for enhanced strength, these control arms are laser cut and CNC folded for precision. They feature on-car adjustability with a range of -10mm to +10mm, allowing for approximately +/- 2.25 degrees of camber adjustment. The design also provides increased bump travel clearance over the OEM arm. The design retains the factory swaybar mount point and features a unique structure without heim joints for maximum strength. GKTech offers a lifetime warranty against manufacturing defects on these suspension arms, and the Teflon-lined spherical bearings come with a 1-year replacement warranty. Spare bearings are readily available. These control arms are confirmed to fit the Lexus IS200 (SXE10), IS300 (JCE10), and JZS161/GS300.