SSR GTV01 Wheels are a 1 piece style featuring flow forming technology which presents extremely high pressure to the metal during the forming process, creating a stronger wheel than a typical cast wheel. This simulates a forging that makes the wheel more suitable for abuse and hard use. They are available in flat black and glare silver and in 17, 18, or 19 inches with a variety of offsets. If your vehicle features a TPMS system, it is fully compatible. A center cap and valve stem is included with each wheel.