The Tein Street Advance Coilover kit is a high-quality one-way adjustable fast road coilover. Designed with fast-road driving in mind, the Street Advance kits allow users to adjust not only the ride height but also the damping allowing you to fine-tune them for exactly the sort of driving you are doing. This damping force is adjusted using a 16 point mechanism, which adjusts both the compression and rebound together for simplicity. The 16 point adjuster mechanism enables accurate adjustment for almost every environment yet also allows the driver to notice a change in every step. The dampers themselves feature a shortened shell case design which ensures optimum performance at lower ride heights, whilst the damper internals have been developed to offer increased durability and longevity.Specifications Include:Steel Construction for durabilityTwin-Tube internal constructionLarger piston diameter for strut type front and rear (22mm)Improved wider 16 level damping force adjustmentRide Heigh