Authentic XRAY RIGHT-side 2° aluminum caster block & XRAY LEFT-side 2° aluminum caster block are CNC-machined from premium Swiss 7075 T6 aluminum. Ultra-strong construction provides long lifespan & durability in perhaps the most extreme racing conditions. Designed particularly for GT platform to improve the steering also to reduce steadily the tire use. Includes XRAY composite bushings for super-precise and smooth steering action. Laser-engraved with XRAY logo, caster value, and R & L for quick & simple identification. Precision machined with greatest tolerances using premium fully-automatic German CNC-machines. High-quality layer is done at XRAYs own in-house fully-robotic layer line, ensuring a fantastic surface each and every time. Fits just XRAY GTX8 and GTXE vehicles.