I practically lived in Denver for a couple years. The roads there are utter crap. I do sympathize though as it is hard maintaining the roads in that climate.

Looks like a decent set of affordable coilovers.

What about the Flex A? Wondering if they are worth the extra money.

LoL at the road comments. Let me know when all of you want to pay Japanese / European gas prices and then we'll have plenty of money to do road work...

Yes it is!

I think the Flex A have the hydraulic bump stops and are rebuildable, but does anyone know how these compare performance wise?

We're not really, we didn't get any EU funding for our road network like our neighbours all did.

I believe the A and Z are similar bar the HBS.

Is it worth it to upgrade from street flex to flex A ?

How do these compare with the KW V3? The price is insanely low so just wanted to see how it compare to similiar (?) products.

A is rebuildable and can be revalved.

If nearest tein dealership is outside of country anyway .. i probably would prefer cheaper non-rebuildability with changing just damper part to spare one, as in flex Z.

Meanwhile reading product's description page over in ft86speedfactory shop ..

Height Adjustable Range
Base Ride Height Drop: Front -1.2 inches, Rear -1.2 inches
Max Low / Hi: Front -2.3 inches to 0 inches, -3.0 inches to 0.4 inches
Recommended Low / Hi: Front -1.6 inches to -0.8 inches, Rear -1.6 inches to -0.8 inches
Spring Rates Front: 6K Rear: 6K

It answers my own questions of height adjustment range and spring rates .. but another arose. I wonder why spring rates on front/rear are same, unlike different rates of OE? Won't it change car handling/balance to different?

I don't think they are similar products. I say it maybe comparing apples and oranges.

I showed this to a buddy and he honestly said that for suspensions you really pay for what you get.

The price for these are very attractive and am sure it is a great product, however I don't think these can be comparable to high end coils. If so then high end coils would be out of business already.

It is not a fair comparison between a 2-way suspension kit and a 1-way suspension kit. :)

I should have the web guy add that too as that may be helpful as well. This is a street coilover and was not developed for absolute performance in mind even though it achieves it quite well. The weight transfer is going to be less "dramatic" per say for those who are not as seasoned, but the valving is definitely superior to those in its price point or even near its price point. ;)

Alot of coilovers have square setups. Even the CGS spec SRC are only ~20% firmer in the rear. OE is 76%!! (GT86/FRS)

Look though some of the suspension the threads, this has been answered countless times before!

Calculate the motion ratio. :)