Zhigu's 2 piece wheel assembly features a modular design with a forged 6061-T6 aluminum center and a spun-forged aluminum rim, offering customizable width (8-14J) and offset (-30 to +40mm). The two components are secured by 12.9-grade steel or titanium fasteners, torqued to 70ft-lbs with threadlock for vibration resistance. This design allows for easy maintenance and part replacement, while supporting deep concave profiles up to 3.5 inches. The assembly process includes precision CNC machining with 0.02mm tolerances and TIG welding for airtight integrity. Each wheel undergoes dynamic balancing (≤15g) and X-ray inspection for internal defects. Certified to JWL and VIA standards, these wheels are ideal for performance vehicles and show cars seeking both style and functionality.