Tein Flex Z Coilover Suspension Kit - 4 Series Gran Coupe (F36) 4A20 Intake the inner surface is finished

the inner surface is finished to a mirror finish using diamond cutting techniques

raising peak power 700 rpm higher than what OEM or Pro 1+ Camshafts allow for

and individually inspected for quality assurance

excessive fuel) can cause a loss in power

This is a clear testament to the effectiveness of our product

Tein Flex Z Coilover Suspension Kit - 4 Series Gran Coupe (F36) 4A20 Intake the inner surface is finishedTein's flagship coilover, the Flex Z includes all the features you'd want on a suspension kit. 16 level damping adjustment, full ride height control and replacement top mounts make Flex Z the complete package. Highly durable, each Flex Z kit features thorough rust proofing and is made of high strength, highly durable steel for added peace of mind.