The Zero-1coilover suspension kit is the first level in the Zero-Series lineup. This kit is ideal for the enthusiast that wants excellent performance without breaking the bank. Offering all the features of the Zero-Series, the kit includes upper perch, dust cover, bump stop, shock, spring, and spanner wrenches. Even though this kit does not offer adjustable dampening, upgrading to the adjustable Zero-2 shock at a later date is available. Installation is straightforward and bolts on using normal hand tools