MAX Competition coilovers for 1993+ Mazda RX7 FD3S. ~ Ultra High Range Adjustable Damper allows you to swap springs freely without a re-tune/rebuild & has very even and predictable force changes between our very defined 32 reference points on the infinitely adjustable rebound. ~Threaded lower mounts allow ride height changes to be made independently of spring preload. ~Competition coilovers are designed to be shorter than the Pro coilovers to allow a much lower ride height. ~Standard Light weight linear spring rates are 20kg front and 8kg rear, but wide range of spring rates are available by request ~ Lightweight anodized aluminum mounts and collars ~ Coilovers feature pillowball top mounts to allow suspension to operate without binding the shock ~Poly lower mount bushings are standard ~Progressive microcellular foam bumpstops ~Laser logo etched threads for quick visual symmetry in height adjustments ~ Air-Spring (airbag) upgradeable *since front coilovers mount to lower control arms, changing the arm length will change ride height. We recommend using our lower arms to achieve a very low ride height.