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The Eibach PRO-KIT lowering spring set is engineered to improve handling and appearance for BMW 6 Series 640i and 640d models. These springs lower the vehicle to sharpen body control and reduce roll while preserving ride quality for daily driving and occasional track use. Eibach positions the PRO-KIT as a premium option that balances enhanced handling with a tidy, factory-integrated look for BMW 6 Series cars.
Eibach Pro-Kit Performance Springs (Set of 4) for BMW 6 Series 640i / 640d
