So I'm checking out JapanParts and also JDM STI website for Subaru STI parts.
Links:
コイルスプリング F (Dタイプ~):WRX STI(VA)|パフォーマンスパーツ|STI
Japanparts.com - JDM Parts,Performance Auto Parts
There's a crapload of stuff on JapanParts and I'm cross referencing and just assuming things, but here's what I can figure out so far.
A.) There's some older Bilstein struts/shocks apparently for "S4" set you can get and there is a regular "Subaru" spring (not pink STI) that goes with it.
Springs:
Japanparts.com - JDM Parts,Performance Auto Parts
Struts:
Japanparts.com - JDM Parts,Performance Auto Parts
Still not entirely sure if this is S4 only or STI or there's 2 types? But on JapanParts there's only these struts/shocks and the springs it says it's for STI (VAB is the code in Japan)
Confusing????
B.) Now this is simple, S207 Struts/shocks and springs (STI pink). Again different Bilstein struts, probably just S207 variant.
Springs:
Japanparts.com - JDM Parts,Performance Auto Parts
Struts:
https://www.japanparts.com/parts/detail/48336
C.) STI Pink lowering springs, about 10cm, for different model/years, for 2018+ it's D- variant, I found this on amazon on how to read your VIN plate:
Springs:
Japanparts.com - JDM Parts,Performance Auto Parts
https://www.japanparts.com/parts/detail/46971
Which you need is according to when you car was built using the chart on amazon. So mine is a 2018 so I need the VAB/D-, meaning reading the letter D and beyond. The other spring is A to C so earlier models.
BUT there's another option, you can choose regular struts or the Bilstein struts! But what does this mean even? Is this some option you can get Bilstein strut or something in Japan on the STI models? I don't see it on JapanParts but I don't think it's the "A" I listed. I also don't think it's the S207 Bilsteins as those are special set.
Amazon:
https://www.amazon.co.jp/SUBARU-STI-コイルスプリング-フロント側-WRX-VAB-MT車用-ST20330VV000/dp/B01N4ASV4T
So very confusing but I don't see anyone mention these springs for the 2015+ chassis or even tried it? It's comparable pricing to RCE Black/Yellow other than shipping, but if you order more stuff it balances it out. (Not your wallet though haha)
I might just order the set of STI Pink lowering springs, it's good amount 10cm and it's OEM made so I know they won't rust as bad as RCE. Trust me I had 5 sets of RCE springs on 4 different Subaru, they rust.
Links:
コイルスプリング F (Dタイプ~):WRX STI(VA)|パフォーマンスパーツ|STI
Japanparts.com - JDM Parts,Performance Auto Parts
There's a crapload of stuff on JapanParts and I'm cross referencing and just assuming things, but here's what I can figure out so far.
A.) There's some older Bilstein struts/shocks apparently for "S4" set you can get and there is a regular "Subaru" spring (not pink STI) that goes with it.
Springs:
Japanparts.com - JDM Parts,Performance Auto Parts
Struts:
Japanparts.com - JDM Parts,Performance Auto Parts
Still not entirely sure if this is S4 only or STI or there's 2 types? But on JapanParts there's only these struts/shocks and the springs it says it's for STI (VAB is the code in Japan)
Confusing????
B.) Now this is simple, S207 Struts/shocks and springs (STI pink). Again different Bilstein struts, probably just S207 variant.
Springs:
Japanparts.com - JDM Parts,Performance Auto Parts
Struts:
https://www.japanparts.com/parts/detail/48336
C.) STI Pink lowering springs, about 10cm, for different model/years, for 2018+ it's D- variant, I found this on amazon on how to read your VIN plate:
Springs:
Japanparts.com - JDM Parts,Performance Auto Parts
https://www.japanparts.com/parts/detail/46971
Which you need is according to when you car was built using the chart on amazon. So mine is a 2018 so I need the VAB/D-, meaning reading the letter D and beyond. The other spring is A to C so earlier models.
BUT there's another option, you can choose regular struts or the Bilstein struts! But what does this mean even? Is this some option you can get Bilstein strut or something in Japan on the STI models? I don't see it on JapanParts but I don't think it's the "A" I listed. I also don't think it's the S207 Bilsteins as those are special set.
Amazon:
https://www.amazon.co.jp/SUBARU-STI-コイルスプリング-フロント側-WRX-VAB-MT車用-ST20330VV000/dp/B01N4ASV4T
So very confusing but I don't see anyone mention these springs for the 2015+ chassis or even tried it? It's comparable pricing to RCE Black/Yellow other than shipping, but if you order more stuff it balances it out. (Not your wallet though haha)
I might just order the set of STI Pink lowering springs, it's good amount 10cm and it's OEM made so I know they won't rust as bad as RCE. Trust me I had 5 sets of RCE springs on 4 different Subaru, they rust.