BMW M4 (G82, 2021 to present). The current G82 M4, a fast and capable track platform. JRZ’s handbuilt dampers for the G82 come in multiple levels of adjustment, up to 3-way double-adjustable, and are custom-valved to your car and your goals. We are the official U.S. JRZ distributor, so you get expert spec, valving, and setup support with quick shipping.