TEIN Dampers - Comfort Sport: Designed and developed with the sophisticated driver in mind, the Comfort Sport Damper provides increased handling and a more stylish appearance; while retaining a smooth civilized ride. The Comfort Sport Damper features TEIN's latest technological innovation, the Micro Speed Valve (M.S.V.), improves overall traction and steering response by precisely controlling the internal flow of oil.

The smooth, sleek black shell case is coated with a special fluorocarbon resin for superior resistance to corrosion. Gold alumite spring seats and locks distinguish the Comfort Sport dampers from competitors and ensure a simple, hassle-free adjustment; every time. By using popular sized wheels and tires to develop the Comfort Sport damper, we are able to accurately determine the optimum spring rates and damping to achieve a perfect balance between comfort and performance.

EDFC controller can be bought HERE.

Note*  There are two different part numbers for the Lexus IS300 Comfort Sport coilovers, TokenSolutions lists the variant that has slightly stiffer sring rates than the other model as the general consensus is that the GSY20-K1SS3 version is too soft.

Part Number: GSY20-KUSS3
Notes: Comfort Sport Damper; For EDFC use EDK05-12120 (Motor)
Manufacturer: TEIN
Spring Rate Adj Range (R): +2.0~-2.0lbs/in (112~-112kgf/mm)
Spring Rate (R): 392lbs/in (7kgf/mm)
Spring Rate (F): 504lbs/in (9kgf/mm)
Ride Height Adj Range (R): -0.1~-4.8in (-2~-121.39mm)
Uppermount: Rubber Uppermount
Ride Height Adj Range (F): 0.2~-4.5in (6~-115.48mm)
Spring Rate Adj Range (F): +2.0~-2.0lbs/in (112~-112kgf/mm)