Full Coilover Lowering Suspension Kit compatible for Honda Civic EM2 Coupe 01-05

Features 100% , Never Used or Installed Twin-Cylinder Design - Allows Sufficient Stroke Within The Shock Absorber. Full Length Adjustment - Lowers The Car Without Ruining Spring Tension Independent Spring Tension - Custom Stiffness Without Change Ride Height Aggressive Spring Rates Aluminum Anodized top hat& collars Aluminum Pillow Ball Upper Mount, Brackets Aluminum Front and Rear Bottom Mounts Fully Anodized Rust Resistant Sleeves. Twin-tube Coilovers It is not a matter of which design is better than the other, but providing the most suitable design for what the purpose is. 1\. It is easier to secure sufficient stroke, because the oil and gas chambers are separated and not positioned serially. 2\. The use of base valve enables to keep gas pressure low, allowing for a more comfortable ride. 3\. Low gas pressure avoids stress on seals and keeps friction low. 4\. Compared to the inverted type, friction can be suppressed. 5\. Even if the shell compatible for case