The taboo subject of Taiwanese coilovers...
 

Ok, D2, KSport, XYZ, Megan, BC...

Pretty much the only way to buy a set of full-length treaded coilovers for under $1000.


Has anyone tried them?

I am especially interested in XYZ since they actually sponsor a professional racing team (kind of have to wonder if they really use their suspension though... if they do I bet it's not even close to what you can buy) and because their price in Japan just dropped.

But they're made in the same factory as D2 for certain (the picture of the factor is the same place on both websites), and almost certainly KSport (the designs are all exactly the same).

But I get the feeling that compared to a real shock, they're shit.

I have heard bad things about their durability on the track.

Megan and BC are apparently both made by the same factory in China, although neither are available in Japan.

I can't afford Japanese coilovers, the yen is just too strong and prices are too high for what you get.

Get a set of good used coilovers for $1000 instead

How much are Parts Shop Max coils in Japan? I got mine for $1000 + shipping stateside

Fortune Auto is the way to go for cheap crap. by far the best dyno's I've seen from a sub 1500$ setup. Can you get those out there?

I've got a set of BC racing coilovers. They're cheap and do the job. the build quality is pretty decent and are a vast improvement over stock suspension

Coilovers are only trustworthy till about 10,000 miles, and there's no telling how many miles on on a used set. It also costs between $600 to $1000 to rebuild four coilovers in Japan. So if you can't get them for less than half what they sold for, it's not worth the trouble.

Also, if I was driving an FD or Silvia it would be easy, but used coilovers for MR-2s in good condition for decent prices are too few and too far between even in Japan.

If you dont track them at all, or very rarely, they will do fine for the price.

Err, tracking is the only reason I want them. The stock suspension is plenty for street work but the dampers aren't stiff enough for the track.

Here is your set!

Ohlins DFV Road & Track Coilovers for Mazda Rx-7 (FD3S)

If you're willing to spend an extra 100 or so bucks, Lucky 7 is having a sale on Stance coilovers. Might be worth a look.

These can be serviced in the US as well!

https://www.rx7club.com/west-sale-wa...5-off-1014181/

If I actually had an FD I wouldn't see any problem with spending $3,000 on the suspension. This is for an MR-2 that I will have to sell in a year or two.

I'm in Japan so Stance is not a viable option.

there you go. a spring is a spring and a threaded collar is a threaded collar, the part that you're actually PAYING for is the DAMPER. if the damper is no good, then you're buying junk.

in the US you can buy hypercoil springs, in any rate and length you want, for $60 each. threaded collars are circle track stuff, about $40 a corner.

Yep... I mean, they're probably just copies of other better dampers, but the real concern is materials and tolerances.

and valving. there is no way its valved right if the people making it don't know or care why you need to valve it to a certain rate in the first place.

if you want an example, we have an FC running 300/200 springs on KYB AGX's and a second one running 400/250 springs on koni yellows.

guess which one handles better? you'd expect the koni car, and you'd be right

guess which one rides better? you'd think the softer springs would ride better, but you'd be wrong, the koni's dampen better, so that car actually rides better, it actually rides better than my STOCK FC.

shocks are important! you can skimp on springs, as a spring is a spring, but you can't skimp on a shock because that is the important part!

I have two friends... S2000 and IS300... both cars are more or less specific trackrats. (The drivers are fair... Nothing to write home about, but far from being noob ricers.. The s2000 driver is the more serious one, and He can set some fast times.)

Both of these cars are using BC, they seem to enjoy them, and do very good with them.

I picked up BC's cause of these two guys... my car is mostly a street car, I've yet to see track days, but I do have it planned.

As far as what I think on the street, they are fine... Kinda get what you pay for... (My car is 95% highway, and 5% city.) a bit "endless loop bumping" on the wrong street/wrong speed. (Doing 80+ on uneven HWY gets that stiff *BUMP!....BUMPBUMP...BUMP!...BUMPBUMPBUMP.... cruising 40-60 is comfortable and very safe... I dont get scared when I come up to uneven roads like I do at 80+)

What I really hate is hitting the uneven joints of concrete on the HWY, and get that "CRASH" feeling, like my dash is gonna fall off.... makes the dash do a "shutter"....


I used to have HKS hipermax II on my miata... I really loved them, I mean... Really... Maybe its been too long since I remember how the miata drove, but I would like to try a pair on the rx7... As Ive gotten older, ive come to hear, or find out, that the HKS are supposedly no better than my BC.... If not the same thing... (The HKS's were kinda soft... I ran them at full 40 clicks.... The BC I have the front at 10 of 30, and the rear is 15 of 30. With this setup I noticed an HUGE DIFFERENCE in how the car transitions weight in a corner... Very neutral... TINY bit of oversteer.... 15/15 made the car plow... I felt no response from the front.... and 30/30? No. Just No.)