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Old 04-05-2020, 05:46 PM   #1
The04of518
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Member#: 269322
Join Date: Jan 2011
Chapter/Region: Tri-State
Location: Queensbury Ny
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2011 sti
silver

Default 2020 series white bilsteins

Curious about lowering spring fitment on the bilsteins that come on the 2020 series white wrx.
A. Will regular wrx springs fit
B. Can the bilsteins handle the springs unlike regular wrx struts
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Old 04-09-2020, 11:04 AM   #2
WRXnick16
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Join Date: May 2016
Chapter/Region: BAIC
Location: W Sac, CA
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2016 WRX (traded)
2019 STI CWP

Default

Quote:
Originally Posted by The04of518 View Post
Curious about lowering spring fitment on the bilsteins that come on the 2020 series white wrx.
A. Will regular wrx springs fit
B. Can the bilsteins handle the springs unlike regular wrx struts
I'd go with a set of STi Pinks designed for the STi Type S Bilsteins:

https://www.japanparts.com/parts/detail/51770
ST20330VV100 x2 + ST20380VV010 x2

These are the VAB "D Type" springs designed for the 2018+ Bilsteins. They should provide a 10mm drop and increase roll rigidity/stability while still being "comfortable".
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Old 05-22-2020, 09:07 PM   #3
WoDan23
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Quote:
Originally Posted by The04of518 View Post
Curious about lowering spring fitment on the bilsteins that come on the 2020 series white wrx.

A. Will regular wrx springs fit

B. Can the bilsteins handle the springs unlike regular wrx struts


Iím also interested in these questions if anyone has an answer. I was looking at the rce yellows but they are designed with stock struts in mind, not the bilstein. It would help to know what bilstein struts are actually used? B6, b8?, something specific? I love the suspension itself stock, just want to lower it a bit.
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Old 05-22-2020, 10:33 PM   #4
SoapBox
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Generally speaking, a B6 (made for a stock spring or mild lowering spring) or a B8 is fine for a mild increase in spring rate, with the B8 being shorter bodied for significantly lower springs (although cutting the B6 bump stops is always an option).

No real way to know about the valving btween a B6/B8 and the WRX specific Bilsteins, but I'd be willing to bet they're a damn close to a match. After all, Bilstein makes their B6 workable on the factory spring.

Anyway, I'm not sure anyone would be able to answer your question without gutting the Bilstien insert, but IMHO, either would be fine to run with a mild spring like the RCEs you mentioned.

Honestly, it's tough to know what is what with Bilstein these days. I took apart a B6 and a B8 for a 1 series BMW last year, couldn't tell them apart. The valving is supposed to be the same, but the inserts were the same (body and stroke length), and the bump stops and the bodies were also the same. I was confused.

Last edited by SoapBox; 05-22-2020 at 10:39 PM.
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