Suspension/Stiffening STI (Japan) Springs [Pink] + Bilsteins, S207 - Page 2 - Subaru Impreza WRX STI Forums: IWSTI.com
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STI (Japan) Springs [Pink] + Bilsteins, S207
STI (Japan) Springs [Pink] + Bilsteins, S207
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Old 08-24-17, 05:48 PM   #11
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Default Re: STI (Japan) Springs [Pink] + Bilsteins, S207

Yes these have pillowball (spherical I guess?) pressed in, that's the only difference, and the STI sticker lol.

After these, you can get the Chargespeed rear trailing arm that has pillowball or hardened rubber bushing, then there's only 1 more bushing in the hub that isn't pillowball.

Also the upper control arm is regular rubber but you can only replace those with poly or group n rubber, which is pain in the ass to replace, so I'll just ignore those.

Bilsteins are nice but really I don't see myself using the adjustable valving.. I only track 1-3 times a year at a relatively low speed track. Stock is good enough. I don't want to spend $2500 on struts.

I had RCE yellows on my 08 STi and 15 STI, I think they are bit too low and too harsh, I hope these STI springs will be something like RCE black but with OEM durability and not rust in 1 year.
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Old 08-24-17, 05:52 PM   #12
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Default Re: STI (Japan) Springs [Pink] + Bilsteins, S207

I considered the JDM springs after the Blacks but couldn't find anyone before you. You are doing the community a service! So thanks STI (Japan) Springs [Pink] + Bilsteins, S207
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Old 08-24-17, 05:57 PM   #13
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Default Re: STI (Japan) Springs [Pink] + Bilsteins, S207

No problem, will post here and in my journal, I won't be taking any install pics as I do a lot of greasing up the bolts/nuts for winter, so will just take some completed pics or something.

I'll see if I can do the fronts tomorrow and the whole rear shabang on Sunday.

Reinstalled the Beatrush rear subframe inserts and MUCH better than the SuperPro ones. Something is definitely not right with those superpro, they probably tilt the rear diff a wrong angle due to the same size bushings for front and rear and cause more NVH than these METAL inserts lol.

Also swapped to the 20mm Subaru rear sway from the 19mm, what a waste that I even have to do this.. lol but whatever $100 for sway bar is good.
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Old 08-25-17, 08:11 AM   #14
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Default Re: STI (Japan) Springs [Pink] + Bilsteins, S207

So i'm confused, what shock/strut are you pairing these springs with on your 2018?
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Old 08-25-17, 04:26 PM   #15
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Default Re: STI (Japan) Springs [Pink] + Bilsteins, S207

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So i'm confused, what shock/strut are you pairing these springs with on your 2018?
Stock 2018 kyb struts

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Old 08-25-17, 04:28 PM   #16
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Default Re: STI (Japan) Springs [Pink] + Bilsteins, S207

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Stock 2018 kyb struts

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Fronts partially in, trying to apply synthetic grease to every single bolt before finishing.

Gotta redo driver side due to some weird thing with spring holder rubber...

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Old 08-26-17, 02:35 PM   #17
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Default Re: STI (Japan) Springs [Pink] + Bilsteins, S207

Quick note, always install spring top same indentation as stock.

Doing rears now, the STI spring is slightly taller than OEM, meaning more preload. Not sure why though. After fronts I see slight drop, will finish up tomorrow

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Old 08-26-17, 05:30 PM   #18
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Default Re: STI (Japan) Springs [Pink] + Bilsteins, S207

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Originally Posted by BriEE View Post
Quick note, always install spring top same indentation as stock.

Doing rears now, the STI spring is slightly taller than OEM, meaning more preload. Not sure why though. After fronts I see slight drop, will finish up tomorrow

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Some pics of rear in progress.

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Old 08-26-17, 09:30 PM   #19
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Default Re: STI (Japan) Springs [Pink] + Bilsteins, S207

Would these springs work on my 2017 Sti? I wanna lower my car slightly but would like to have that Oem look and reliability.
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Old 08-26-17, 09:39 PM   #20
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Default Re: STI (Japan) Springs [Pink] + Bilsteins, S207

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Would these springs work on my 2017 Sti? I wanna lower my car slightly but would like to have that Oem look and reliability.
It will work but i recommend you to get a 2017 STi specific JDM STi pink springs to match your 2017 struts/shocks same drop as the 2018's pink springs.
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