The KW lowering sleeve kit for the Nissan GT-R is designed to work with the factory struts and top hats. The provided springs offer a much sportier ride and the ability to lower the car enough to improve balance and handling. This lowering solution from KW optimizes the dynamic performance and the steering behavior without affecting the factory electronic damper control. This complete conversion kit will afford you a high performance solution to lowering your R35 GT-R without spending thousands on a fully independent coilover system. You can rest assured that all components are of exceptional quality and have been properly engineered and rigorously tested by KW, the industry leader in suspension component manufacturing.