The H&R 20-22 BMW X3 M/X3 M Competition F97 OE Sport Spring is a performance suspension upgrade for the BMW X3 M and X3 M Competition. It is designed to improve the handling and performance of the vehicle, providing a more aggressive look and improved cornering. The spring is made from high-tensile steel and is engineered to be both lightweight and durable. It is designed to lower the vehicle's center of gravity, improving handling and providing a more aggressive stance. The spring also provides a more comfortable ride, reducing body roll and providing a smoother ride.