Suspension and Brakes Springs, shocks, coilovers, sways, braces, brakes, etc.

Greddy KW vs RSR vs BC opinions?

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Old 07-07-20, 12:04 PM
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Gsr3is
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Default 3IS coilovers

Debating between these 3 coilovers. Any feedback appreciated.
  • GReddy KW (~$1400):
    • Range: -1" to -2.2" front. -1.2" to -2.4" in rear. The rear drop seems a little too much for my taste. I only saw one thread and his tires were nearly tucked in. Looked like the RS*R superdowns.
    • Sprint rates: 11K/8K
    • Havent seen much feedback on this in the forum.
  • RS*R Sports-i (~$1800 with the extension for rear): A little pricey to be honest.
    • Range: +1" to -3.8" in front and -0.4". to -2.6"
    • Sprint Rates: 10K/8.3K
    • Rear height adjuster sits at the bottom. So need to remove the spring each time if adjusting the height. Seems painful
    • Everyone that has it raves about it.
  • BC Racing BR series (~$995):
    • Range: -1" to -2" front and -1" to -2" rear. BC confirmed this via support question.
    • Spring Rates: 12K/10K
    • Generally good feedback with some people having clunking noises every now and then.
    • Swift spring upgrade is something that people say is worth it (~$315)

Last edited by Gsr3is; 08-05-20 at 08:18 PM. Reason: Adding more details
Old 07-08-20, 09:35 AM
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Our most popular selling coil is RSR. You can find the drop on their website which is the most accurate depending on which coil you get from them, basic, sport, black, etc.. (In stock)

BC with swift is another great option since you can customize your spring rate for free. Best bang for your buck coil for sure. (Have to order, 4-6 week ETA)

Greddy x KW is another good option but newer so not that many reviews. (no ETA)

Contact us for pricing on either of them!
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Old 07-08-20, 09:01 PM
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Gsr3is
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@Josh, what spring rate do you recommend with BC’s with a swift upgrade?
I did read on figs page that swift are overkill for a DD. My car will never see track. So what benefit does that upgrade provide? Just curious whats all the rave about 😊.

I have RC-F LCA bush on the car already.
Old 07-09-20, 10:50 AM
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Originally Posted by Gsr3is
@Josh, what spring rate do you recommend with BC’s with a swift upgrade?
I did read on figs page that swift are overkill for a DD. My car will never see track. So what benefit does that upgrade provide? Just curious whats all the rave about 😊.

I have RC-F LCA bush on the car already.
Spring rates I would say whatever BC gives from factory. People usually up their spring rates for track guys or stance guys that don't want to rub. Or just personal preference so hard to say.
I wouldn't say swift is overkill for DD, lot of people like the better spring.

-Josh
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Old 07-09-20, 01:35 PM
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Gsr3is
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Thanks Josh. That kills BC's for me. That 2" drop is lot more than what I want. Now I got to see how I can convince my wife to let me spend the bucks for a RSR.....

Update: BC drop is -1" to -2"

Last edited by Gsr3is; 07-21-20 at 09:26 AM.
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Old 07-10-20, 10:44 AM
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For the comfort

-Josh
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Old 07-21-20, 09:25 AM
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Updated the OP with the ride height range from BC. They finally replied to my question about drop. With the BR coilovers, the front range is -1" to -2" and rear is the same -1" to -2".

Now BC's dont sound so bad. I had already ordered the half-downs though. Will try them first to see if it improves the cornering stability or not. If not, then I will go with coilovers.
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Old 01-02-21, 04:08 AM
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Just a few notes about our Road & Track R2 coilovers, and how they compare to other offerings out there:

(1) We don’t just slap these together and expect you to spend hours sorting out basic settings. Every coilover is shipped out preset to the correct shock length. Most install shops do not know and/or don’t want to take the time to make this adjustment. Not getting the shock length correct will result in clearance issues, particularly in the front where the tire will smash into the fender liner.

(2) Our coilovers utilize front secondary Hypercoil helper springs, this makes for EASY height adjustment without messing with shock length or spring preload.

(3) Our coilovers are not “one size fits all.” Every customer who purchases coilovers gets a personal spring rate consultation. We use genuine Hypercoil or Eibach race springs tailored to your driving preferences!



Old 01-05-21, 05:43 AM
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JGO
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Get the BC's. Save some money for other things.
Old 01-14-21, 12:52 AM
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Originally Posted by JGO
Get the BC's. Save some money for other things.
I thought it was "Save some money on other things, so you can get RSR Coilovers" ?



RSR Coilovers for Lexus IS3
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