Zhigu's two piece forged wheels represent the pinnacle of modular wheel technology, featuring a forged 6061-T6 aluminum center and a spun-forged aluminum rim. This design allows for extreme customization of width (7-16J), offset (-40 to +60mm), and concave depth (up to 4.5 inches). The two components are joined using aerospace-grade titanium fasteners (12.9-grade), ensuring a secure and lightweight connection. Each wheel undergoes ultrasonic testing for internal flaws and is stress-relieved through thermal cycling. The result is a wheel 35% stronger and 28% lighter than cast equivalents, certified to ISO 9001 and TS 16949 standards. Ideal for high-performance vehicles and show cars.