This is there office https://email@example.com.../data=!3m1!1e3
- this is not where products are produced - those products come TEIN Far East International Trade Company of China in China, by a manufacturer that makes a number of brands.
The only thing that differentiates Tein is there street minded development. The quality of the spring material, assembly of the shocks, everything is cookie cutter.
If you take a brand new spring and for the sake of argument its 700lb per inch and put it on a car, drive it normal and take it off in 6 months, if will test 450-500lb per inch, the quality of the steel used and the machines and processes to wind and treat the springs are not on par with Eibach and other TUV/DOT approved manufacturers in Germany and the US.
It's why you can buy a number of OEM cars with KW suspension as standard or track option - in 100K miles they will still be serviceable. They are also designed for ring and autobahn use and comfort for long durations - people call them numb but stable and consistent is a better desciption IMO.
According to KW who bought ST the ST suspension is a plated steel body non serviceable version of the v1 with the same springs and no dampening adjustment - a set it and forget it option. The quality of the shocks and springs will be consistent for a long time. Unless you slam the car to the ground.
Fortune Auto isnt the first to offer Swift Springs - many companies do to legitimize there brands - its a sham and people end up running much higher rates than they actually need with KW and other well dampened units and geometry. I've touched on this in other threads but real time racing was able to go from 2000-2200 lb springs to 700-1200 by fixing the roll centers and they went faster and more consistent, with happier and more comfortable drivers. Even on a race track having the least stiff, but consistent spring and matching dampener is better.
The ultra racing ladder bars are very nice, as is bracing the b pillar