Zhigu's 3 piece wheel rim offers ultimate customization, consisting of an inner rim, outer rim, and center section, all forged from 6061-T6 aluminum. This design allows independent adjustment of width (8-16J), concave depth (up to 4 inches), and offset (-30 to +50mm). The rims are joined using aerospace-grade titanium fasteners (12.9-grade), ensuring a secure and lightweight connection. Each rim undergoes ultrasonic testing for internal flaws and is stress-relieved through thermal cycling. A proprietary finishing process includes multi-layer powder coating and CNC-machined accents. These rims are certified to ISO 9001 and TS 16949 standards, ideal for high-end modifications and racing applications.