i been running d2, ksport, megan on civics for years. i like them never had a problem with them . for price you cant beat it. i even put a set of d2's on my daily vw gli with 12k and 14k springs. i never had any luck with tein.. the only problems i have with coilovers is preaches freezing up and shocks blowing once in a while. id rather buy the d2 for cheaper and when/IF i have a problem its cheaper to fix instead of sending out expensive coil overs and waiting for them to get rebuilt

 

go to www.d2racingsport.com and they have all the info you need.

they can get you a dyno on the coilovers if you want. they are the original producer for some of the USDM coilovers here in the states but i'm not sure which brands.

they definitely aren't poor quality like everyone makes them seem. most of the people who are bashing them have never even driven on or tested any.

 

ksport even competes in some drift and racing events so atleast you know they ARE being tested legitimently

 

Why is this in the JDM forum? You are asking about a US company who gets parts manufactured in Taiwan. Nothing JDM about this.

However, I do race at Sebring occasionally (it's my semi-home track), not in the S -- you would be laughed out of the pits if you showed up with D2s. They are not "race" coilovers just b/c they are 36-way adjustable, they are simply cheaply-made ride height adjustable coilovers designed to appeal to people who want to adjust their ride height w/o a care as to the quality of the suspension. I have looked into having batches of coilovers made at the same factory that makes these ... they are not made with superior quality in mind, I'll just say that. If you're just talking about street coilovers for cruising around and looking cool though, Tein Flex coilovers are really about the same as D2s ... but with SRCs, you're in another ballpark.

Personal feelings aside, have fun with the D2 coilovers, but it is nearly impossible to make arguments that these are legitimate track coilovers. Just be happy with what you have -- if you bought D2s, you bought them b/c they're cheap and allow you to adjust your ride height, so just live with it instead of trying to make them into the black sheep of hardcore track suspensions.

 

I wouldn't go so far as being laughed out of the pits... Last time I was at Sebring was at Viper Days where most of the other cars had Motons. I was there for track support for one of my customers but raced our shops 350Z which had D2's on it and ended up taking 1st in my class and 2nd overall.

*disclaimer* Motons are in a whole other league I was not trying to compare the two just saying shocks aren't the only factor, and there is definitely a point of diminishing returns for your money.

 

d2's best bang for the buck...would never spend $2000 on coilovers thats just me..

 

There definately is a point of diminishing returns ... however, I'm going to go out on a limb and say that if your 350Z placed 2nd among a bunch of Vipers with Motons, the Z is basically a full-out race-car anyway at this point, D2s or not, not to mention a great driver. I've seen cars with stock shocks that beat out heavily modified vehicles, the driver plays a large part, but even you said that D2s and Motons are in different leagues ... imagine what the Z would've done with Motons on it....

I hope that wasn't the same 350Z shop car that got put into the wall by the CRX a couple years ago ... if so, I hope somebody got their money back out of it.

However, there have been many well-documented problems with D2s on the internet -- pretty much everything that can go wrong with a shock has gone wrong wtih D2s at some point. First the coating was bad on the springs, then they leaked, then they weren't assembled properly in the factory, etc., etc.. They have switched from one Taiwanese manufacturer to another more times than most, if not all, other suspension companies, and problems always seem to surface after a couple years with the new manufacturer.

The bottom line is that they are generically manufacturered coilovers that come poorly assembled with little to no instructions compared to other companies, and have a spotty customer service record generally as well. I haven't heard anything crazy bad about them in a couple years though, so maybe they finally found a good manufacturer ... or maybe the problems just haven't surfaced again yet. There are some people who would rather pay extra for better designed products that are known to be dependable and perform well, and then there are people who will go for the cheapest brand they can find. I'm not going to make anybody's mind up I guess, but be careful b/c there have been lots of problems with the older D2s in the past.

 

wow this was some great info... wasn't even my post and i just learned a lot.. but i think he (ap2s2klover) wasn't looking to track his car.. how good would they be for regular street use and maybe little track time? cause for $900 shipped or spend $450 for springs and installation and just get that 1 time drop kinda sucks..i don't mind spending the $ on Tein's but i rather spend it on other F/I goodies

 

his 350z has to be a full race car, just look at ben nsi's car. his car (i can only assume he was talking about his s2000) is 2200 pounds wet. that means its lighter than the opera performance s2000. this, along with his elitist attitude, leads me to not believe anything he says.

 

that also makes me doubt alot of what you say...