Mono Flex coilovers are designed for FR-S drivers looking for the best performance on the street and track. They are very similar to the Tein Flex coilovers featuring full ride height adjustment and 16 levels of damping. The major difference is the mono-tube internal damper design. This allows quick heat dissipation for consistent handling and a larger damping range as well. Tein Mono Flex coilovers include upper mounts, and are compatible with the electronic damping force computer (EDFC). They are also fully rebuildable, making them a long-term solution.