Type HG is designed for rally and / or dirt trail racing. It meets the demands of any road surface with its individual compression / rebound damping force adjustment, and ride height adjustment. Utilizes a twin-tube design, and is constructed with steel for additional durability on rough courses. In order to prevent aeration that can diminish performance, a unique free piston was adapted in the construction of the HG. Developed from TEIN's extensive experience gained in Rally competitions and support. Additional Features: Steel Construction for added durability Twin Tube internal construction Ride Height adjustable via adjustable spring seats 16 × 16 way adjustable dampers, compression and rebound separately adjustable External reservoirs for additional oil capacity and increased stroke 3 stage powder coat Some applications utilize large diameter spring seats which allows both OEM and aftermarket springs to be used 1-year Manufacturers Defect Warranty Available for Overhaul Contents of Damper Kit: Adjustable Shock Absorber × 4 Main Spring × 4 Upper Spring Seat Included in some applications Lower Spring Seat × 4 Seat Lock × 6(8) Bump Rubber × 4 Hook Spanner × 2 Instruction manual