Tein Flex Z Coilovers for BMW 4-Series Gran Coupe F36 4A20 420i 14-21
The Tein Flex-Z range are incredible, height adjustable coilovers made with Tein's famous "Made in Yokohama" quality. As an oil chamber and a gas chamber are not arranged serially in a twin-tube system, it is easy to secure enough stroke.