New Tein Product Announcement H-Tech Springs
 

We will release more info as it becomes available.
Thanks guys!
Rick

To translate into Imperial units, it's 258 lb/in front and 168 lb/in rear spring rates. This might be the closest yet to knowing the stock rates, as lowering springs can't deviate too much from stock without creating awful ride characteristics [i.e. bouncy].

Considering the front is a Mac Strut and the rear has some notable motion ratio, the wheel rate delta front to back is rather biased, with a very soft rear wheel rate. Does anyone have the rear motion ratio of the Impreza/WRX/STI?

Still waiting for RCE to tell us their rates ;)

In general Subarus seem to be pretty highly sprung in the front compared to rear. This car they did the same, compared to Toyota. RCE bumps the rear rate a lot more than the fronts on their STI springs. IMO Subaru isn't very good at suspension tuning (as far as springs and dampers go).

I disagree that you can't change rates much on stock dampers. On the STI I know that the stock bounciness is actually caused by the car being undersprung for its dampers. Again, RCE raises their spring rates significantly front and back to get rid of the stock bounce. Just the backs even more so.

Subaru's alleged tuning incompetence aside, most OEM's match their spring rates to the damper curves reasonably well. As such, deviating too far from OEM rates with OEM damper curves isn't a good idea. FWIW, "bouncy" or "floating" are used to describe underdamped situations, whereas "harsh" or "jolting" are descriptors for overdamped. The situation you're describing is an exception and not the norm.

In the end, it's all about matching the vehicles' parameters such that you achieve the desired wheel rate with the damping curve philosophy of your choice [be it "ideal" or not]. If Tein put the stock dampers on a dyno and found the stock spring rates to not be appropriate, they may feel it necessary to adjust the rates of their offering accordingly.

:thumbup:

Sure, I was just chiming in with my layman input from experience. I don't think we are disagreeing after reading your post. Hopefully RCE will stop by and expand.

nevermind, carry on. :)

I always thought it was common knowledge that S-Techs suck.

Let's keep the discussion on topic please - about springs.

Since RCE is here, and they have aftermarket springs, can you tell us the stock spring rates yet? And if that is part of an information embargo, can you tell us when the stock spring rates an be released?

Thank you.

Damn I obviously missed some entertainment :(

In for stock spring rates though.

We'll start a different thread soon and keep this one on topic.

Needs moar low. I hope TRD Japan has more agressive springs like they used to offer in the 80's and 90's... Ones for the MK1 MR2 would lower it be 2.25"F and 1.75"R

I don't see why. Both cars are out to the public, in Japan at least.

Are the spring rates supposed to be higher in the front? on my car they are higher in the back.

That's going to depend on weight distribution and suspension design.

Common knowledge isn't so common.

whats the prices for these springs??

No US pricing has been released yet

Just wanted to update this thread with some more info!



Tein S-Tech
Spring Rate Ft:3.3k/Rr:5.0k
Ride Height Drop Ft:-35mm/Rr:-30mm
Part No： SKQ54-AUB00
MSRP：$300 est.
ETA End of July

H-Tech Springs:
Spring Rate Ft:3.0k/Rr:4.6k
Ride Height Drop Ft:-25mm/Rr:-20mm
Part No： SKSA0-G1B00
MSRP：＄310
ETA End of June


Tein Street Basis Damper:
Spring Rate Ft: TBA/Rr: TBA
Ride Height Drop Ft-35mm/Rr-30mm
Ride Height
Adjustable Range
Ft: N/A
Rr: N/A
Part No： GSQ54-1USS1
MSRP：＄TBA
ETA: TBA


Tein Flex Dampers:
Spring Rate Ft:7k/Rr:7k
Ride Height Drop Ft:-35mm/Rr:-30mm
Ride Height
Adjustable Range
Ft:-55mm～+5mm
Rr:-45mm～+5mm
Part No： DSQ54-61SS1
MSRP：＄1790
ETA: End of June



Tein MonoFlex Damper:

Spring Rate Ft:8k/Rr:9k
Ride Height Drop Ft:-35mm/Rr:-30mm
Ride Height
Adjustable Range
Ft:-55mm～-10mm
Rr:-45mm～+5mm
Part No： GSQ54-F1SS1
MSRP：＄2300
ETA: End of August



Tein Super Racing Dampers:
Part No： DSQ54-81LS1
Estimated MSRP：$3650
ETA: September


We will post up more info as we get it.
Thanks guys!
Rick

Tein S-Tech
Spring Rate Ft:3.3k/Rr:5.0k
Ride Height Drop Ft:-35mm/Rr:-30mm
Part No： SKQ54-AUB00
MSRP：$280.00 est.
ETA End of July

H-Tech Springs:
Spring Rate Ft:3.0k/Rr:4.6k
Ride Height Drop Ft:-25mm/Rr:-20mm
Part No： SKSA0-G1B00
MSRP：＄310
ETA End of June


Tein Street Basis Damper:
Spring Rate Ft: TBA/Rr: TBA
Ride Height Drop Ft-35mm/Rr-30mm
Ride Height
Adjustable Range
Ft: N/A
Rr: N/A
Part No： GSQ54-1USS1
MSRP：＄TBA
ETA: TBA


Tein Flex Dampers:
Spring Rate Ft:7k/Rr:7k
Ride Height Drop Ft:-35mm/Rr:-30mm
Ride Height
Adjustable Range
Ft:-55mm～+5mm
Rr:-45mm～+5mm
Part No： DSQ54-61SS1
MSRP：＄1790
ETA: End of June



Tein MonoFlex Damper:

Spring Rate Ft:8k/Rr:9k
Ride Height Drop Ft:-35mm/Rr:-30mm
Ride Height
Adjustable Range
Ft:-55mm～-10mm
Rr:-45mm～+5mm
Part No： GSQ54-F1SS1
MSRP：＄2300
ETA: End of August



Tein Super Racing Dampers:
Part No： DSQ54-81LS1
Estimated MSRP：$3650
ETA: September


Not much of an update, but Tein did confirm price on the S-techs, so figured I would post that up. :)
Thanks,
Rick

I am curious as to this. The BRZ supposedly has a softer stock rear spring rate. is this the reason the FR-S has a sticker stating "this car has been modified and the overall load carrying capacity reduced by 8lbs"? I am assuming the BRZ sus is the original and the FR-S being stiffer is the "modified" thus reducing the overall capacity. Please correct me if I am wrong.

That I am not sure of to be honest, maybe someone else can chime in on this with more info? BTW, loving the JZZ3 in your pic, I am currently building one myself :)

Thanks,
Rick

I made the first reply here. Time will tell if more info becomes available.
BRZ vs. FRS suspension question

That was the one I had in japan. I also had a 5mt when I lived in Layton, Utah. I had Tein coilovers, Recaro seats and a host of other stuff I brought back from Japan...thats the good thing about that car having the same chassis as the Supra! It truly is a wolf in sheeps clothing.

I think it's because of the spring rate difference between BRZ and FR-S in the rear. I mean it's only 8 lbs, but my friends BRZ doesn't have it and he noticed it sitting in my car. Golf clubs and my wife are about all that will be in my car.

mmmm nice :) Now just need to get mine back on the road!

Thanks for the info :thumbsup:

The Tein rates are mixed up front to rear. Should be 3.0/4.6, not 4.6/3.0

Good Catch! I swear I triple checked that when I posted as I had to convert from Japanese to English originally.

Thanks again! :)
Rick

You're welcome. Some sites were mixing up f/r.. I was getting confused. :)