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 even the most extreme race conditions. Designed specifically for GT platform to increase the steering and also to reduce steadily the tire wear. Includes XRAY composite bushings for super-precise and smooth steering action. Laser-engraved with XRAY logo design, caster value, and R & L for fast & effortless recognition. Precision machined with highest tolerances using premium fully-automatic German CNC-machines. High-quality finish is performed at XRAYs own in-house fully-robotic finish line, ensuring a fantastic surface each and every time. Fits only XRAY GTX8 and GTXE automobiles.