SPL Parts Rear Upper Lateral Links - 2020+ Toyota GR Supra (A90) / 2019+ BMW Z4 (G29)

SPL Parts Rear Upper Lateral Links - 2020+ Toyota GR Supra (A90) / 2019+ BMW Z4 (G29) is a chassis-specific suspension upgrade engineered for drivers who want more precise geometry control from 2020+ Toyota GR Supra (A90) / 2019+ BMW Z4 (G29). SPL Parts focuses on competition-grade suspension and alignment hardware, combining in-house development with U.S.-sourced materials and precision manufacturing for demanding street and track applications.

This upper suspension link replaces the factory arm with a more precise component intended to improve wheel-location control and, where adjustable, expand the usable alignment range. By reducing unwanted bushing movement, the upright follows the commanded geometry more closely under lateral load, helping preserve camber and toe behavior through fast transitions and sustained cornering.

Why it matters: On this application, the goal is to keep the tire and upright closer to the intended alignment as loads rise, giving the driver a more repeatable platform for braking, turn-in, mid-corner balance, and power application. The additional setup range is useful for lowered cars and wider tire packages that need alignment targets outside the factory adjustment window.

This type of hardware is most effective as part of a complete alignment strategy, where camber, caster, toe, ride height, and tire behavior are evaluated together.