Is it worth the $$ to go Tein flex A over Z
 

Looks like Tein flex is the best bet for the money from what I’ve read. Should I spend the extra and get the A’s or just get Z’s? Should I spend the extra on other supporting parts? Should I keep springs and get bilstien shocks and save even more? We have very bad roads down here in south Louisiana. I have eibach springs now and it’s pretty rough over large bumps and holes. Can somebody educate me more and help me make a decision?

Interested as well -- Indiana is really rough this time of year in terms of road quality. I love my Flex Z -- but i've often wondered about the hydraulic bump stop.

Are you on sportline or prokit springs?
Are you aware that it is sports car and it is going to ride firm in general?

Things that affect ride-
Wheel/tire size/tire type/pressure, what do you have? psi?
Travel, the lower you go the higher chance you will bottom out, the higher spring rate/firmer shock you will need to avoid that, which makes the ride firmer.
Shocks matched to spring rate.

Not 100% sure but think it’s sportline. They were on the car when I got it.
Yes I know it’s not a Cadillac nor do I want it to be. I want it to handle in the turns as well as possible without it being to harsh.

Rp1 17x9. Bfg gforce comp II. 245/45/17.(bigger and not exactly what I wanted but got a great price on them)maybe a mistake.
Since rims, tires and alignment, less than 1000 miles, it can get bouncy at times. Also rear shock is leaking. Didn’t notice it before rims tires.

I could live with it as is but since it needs to be changed I’d like to improve the handling as much as possible for around $1000

245/45/17 is a full inch larger than stock.
Sportlines are too low to have good travel, especially for the stock shock length.
They are also too much spring rate for the stock shocks.

Do you need height adjustment?
Do you need damper adjustment?
If no, I'd tell you to get some Bilstein b8 and have a simple effective setup.

The springs are supposed to be same as trd springs. The height is fine as is. I think it’s a travel issue. I just don’t know how adding b8 would compair to going with Tein. I have bilstien on another vehicle and really like them. If B8 would be as good or better that would be the route I would go.

We have our CSG Spec Tein Flex A coming in soon with complete revamped internals on the Flex A platform dialed in for street and track usage. :thumbup:

Awesome!! When is soon? And how much?

The ST coilovers are more street oriented and are made in KW's factory. Lot softer spring rate then either of the Flex series coils. I do like my flex Z's, but my car is a 3rd vehicle and my roads are not really that bad.

First batch arrives next month and already sold out. Second batch is in April. Pre-ordering is available upon request. Thank you!

Mine is a 3rd, 4th if you count the wife’s vehicle. I do plan on trying out some tracking soon also. I certainly don’t want rattle my teeth out race car feel but I want more handling than comfort orientation. I know with the Flex I can adjust but would likely leave it close to stiffest setting.

Both FLZ and FLA will drive/ride better than stock dampers on lowering springs.

I am Tein's development driver for the FLZ and FLA, as well as the CSG spec Flex A. Please feel free to ask any questions.

How does the Mono Sport compare to these, in terms of tracking?

FLZ and FLA can be, but are not meant to be tracked. The CSG FLA is designed to withstand extended track use. The MonoSport can also withstand track use, but it's apples and oranges, as it's a completely different design (monotube).

If your tracking the flex series over ther ST's. I'm really impressed with the ride.

If you ask me I'd say spend the extra money and grab the Flex A.

I have the Flex Z, but if I could go back and I'd buy the Flex A. My area is having a shit load of construction going on this past year and these pot holes, bumps, uneven roads are just real......And seeing that you said you have bad roads just justifies me telling you to grab the Tein Flex A.
I don't know if you're going to be tracking, but if you're not, you can't go wrong with the Flex A.


I'm not saying the Flex Z is uncomfortable at all, it's very comfortable and actually rides almost exactly like stock if not a little better. I'm only lowered just an inch. I never driven or had Flex A but I'm sure it's probably A LOT more comfortable than the Flex Z.


TL DR: Spend the extra money and buy the Flex A

What are differences in csg spec and regular flex A?

Valving to handle harder duty, useful if you're canyoning or tracking.

I have Flex A on 2017 GT86 (UK version). I went for 18x9.5 wheels with MPS4 tyres and somewhat lower (about 2.5 inch I recon).

Some roads here absolutely horrible, pothole after pothole and speed bumps every 150m or so.

8 or 9 from full hard (out of 16) feels better than stock on daily driving and noticeably better over speeding bumps. Its a little wobbly at times but less so than my other car (Lexus).

On track 2 or 3 from hard is much better, although somewhat harsh over curbs. 4 is more comfortable, but I ended up thinking that 3 may be the perfect balance.

Adjustments are easy.


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whats the difference between Tein street flex and the csg flex A? Saw them on your site, Is the A worth the extra $$? Is the flex A worth it over the Bilstein B14 set?

Very different.

CSG Spec FLA is very different from TEIN Flex A, TEIN Street Flex, Bilstein B14, etc. You get a very refined ride quality with solid performance while providing sufficient longevity, a quality that is very difficult to achieve while seeking greater levels of performance, valving refinement, and budget consciousness.

CSG Spec damper valving development started with the TEIN SRC 2-Way, which was then pushed into the TEIN Street Flex to see if a 1-way setup was even feasible. Long story short, many years of development was fit into the CSG Flex A while also test proven for performance and longevity on both early model (zenki) and late model (kouki) ZC6/ZN6 chassis.

so, essentially, its the B14 at the bottom, then the street flex, and the better of the three will be the CSG flexA? I'm not in the market for a set yet but I will be later on. I'd like to keep about the same as stock feel/comfort even after lowering it without having to worry about bumpstops and too short of a stroke.

B14 and Street Flex were pretty popular back in 2012 and 2013, but as improvements were made with the platform, so has many aftermarket components. With the new 2017, we were able to finalize some testing with the CSG FLA and are releasing units soon. 1st batch is in the US now and going through quality control/customs. 2nd batch will be arriving next month.

In terms of lowering issues, we tested throughout the entire height adjustment range with no other suspension modifications and setups with complete suspension replacement. Validation of this level is something that we are proud of and can say that the CSG FLA will work with a variety of setups going from complete OEM to fully modified suspension components. :)

Will you be offering FLA packages that include camber plates?

It includes camber plates already.

Don’t forget about MeisterR,s. Decent bang for the buck as well.

How about pure daily driving only. No track. No autox.
Tein flex z?

Stay stock. Maybe a lowering spring.

Second that. Stock is perfectly fine for daily driving and occasional fast road (2017 version is a bit firmer imo). Lowering springs if you want lower.

Unless you want more aggressive wheels or go on track, I think stock car is very capable (much better than some hot hatches i test drove). I had couple track days and 3 training days on testing circuit and stock was great.

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What if you need the clearance for wheel specs (17x9et45 245/40) and plan to track in the future? Flex Z or A?

Either should be fine for clearance, but if you plan to track I would suggest As as you can adjust dampening. Makes quite a difference on some corners.

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Stock is quite good. For improvements of street comfort and spirited driving performance, CSG Spec Flex A covers these avenues quite well.


Inexpensive way to lower the vehicle for the nice look, but does not always translate to a good ride quality unfortunately.

Depends on the spring? I just ordered some RCE Yellows. From what I've read it's a decent ride.

RCE Yellow and Swift Sport springs are designed accordingly as lowering springs but still does a decent job at allowing the shock function.

How about trd?
Im using trd springs

TRD = Toyota Racing Development
Their goal is to provide a system that provides a small enhancement to the factory system. It can be for looks, it can be performance, etc. Any lowering spring will give you something in the X category, but has to take away from the Y category.