You should check out this link that list where Coilovers are made
When it comes to coilovers, there’s no shortage of options. Everything from entry level coilovers starting at around $350 to top of the line coilovers going up to $5000 or more. So it’s…
In general alot product from China has had it longevity and performance questioned, especially if you intending to track / autoX or race your car,
then i would stay away from China made, but some higher end products are ok for street every day , but right now all better quality has a price attached to it,
You pay for what you get.
The majority of better /best are made in Taiwan and those made in Japan and Europe, USA made/assembled with have Taiwan/Japan components.
Going from OEM springs / shocks to Coilovers is a big change ... Take a ride in a friend who is on coilovers
When i compared products i often used Fortune Coilovers as a benchmark
CUSTOM. MODULAR. REBUILDABLE. Fortune Auto engineers are consistently chasing improvement and the development of the Generation 8 - 500 series damper is no exception. The 500 Series single adjustable coilover is the entry into the Fortune Auto-verse. Utilizing the highly advanced, High Flow...
I would suggest the Coilovers Im on the Neo Motorsport Type AA ,
Experience the feeling of LIGHTNESS with Type AA coilover suspension from NEO Motorsport. The composition of lightweight material and heavy duty durable parts results in the feelings of outstanding quality, improved traction, and comfort. The Type-AA coilovers were developed by NEO with the...
But Neo has moved away from one way coilovers to 2 way coilovers.
Both are in the price range as the Fortune ... use it a componet benchmark to compare
And like Arathol mentions ... upgrading the OEM shock to a Bilstein B6 or B8 would be a better product than some of those lower cost Coilovers