Bilstein B16 coilover kits combine application-specific ride-height adjustment with adjustable damping. PSS9 and PSS10 versions provide nine or ten manual damping settings respectively; other B16 versions can use different adjustment systems.
Use the individual listing to confirm the adjustment type, front and rear lowering limits, axle-load limits and compatibility with electronic suspension. Check the exact variant before ordering: the B16 family name alone does not establish compatibility with the car’s original controls.
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Not sure what fits, which approval you need, or what to choose next? Ask Garreth and Cameron. You’ll get a practical answer from people who handle the kit every day.