FK8 Master Spring Thread!

Kami Speed

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We do this basically in every forum we make as it's extremely useful to see your lowering spring options. It'll be especially useful for CTR owners who want to keep use of their dynamic suspension for the modes. We will see how coilovers integrate it, but initially most coilovers will likely do away with that system. For the track guys that's fine but for versatility Springs will be tour way to go!

OEM:
Spring Rate Front: - 4.7 kgf/mm
Spring Rate Rear: - 4.2 kgf/mm
Notes: thanks to Swift Springs​

aFe CONTROL:
Here is the source: https://afepower.com/afe-control-410-701001-n-lowering-springs#applications

CONTROL SPRINGS (410-701001-N)

Design: n/a

Spring Rate Front: n/a
Spring Rate Rear: n/a

Drop Front: 0.875 inches (22 mm)
Drop Rear: 0.875 inches (22 mm)

Expected Release: Available Now
MSRP: $368.75​

Eibach:

Here is the source: http://www.civicx.com/threads/eibach-r-d-for-fk8.13625/

PRO-KIT SPRINGS (E10-40-036-03-22)

Design: Progressive Spring Rates (average value shown)

Spring Rate Front: - 5.2 kgf/mm (291 lbs/in)
Spring Rate Rear: - 4.9 kg/mm (274 lb/in)

Drop Front: 0.8 inches
Drop Rear: 0.8 inches

Expected Release: Available Now
MSRP: $349

Sportline SPRINGS (E20-40-036-03-22)

Design: Progressive Spring Rates (average value shown)

Spring Rate Front: - NA
Spring Rate Rear: - NA

Drop Front: 0.9 inches
Drop Rear: 0.9 inches

Expected Release: Available Now
MSRP: $350
H&R:
SPORT SPRINGS (28714-1) - Pictures

Design: Progressive Spring Rates (averages shows)

Spring Rate Front: 4.5 kgf/mm (44 N/mm)
Spring Rate Rear: 5.1 kgf/mm (50 N/mm)

Drop Front: 0.8 inches
Drop Rear: 0.8 inches

Expected Release: Available Now
MSRP: $399​

RS-R:
Down SUS (H059D) - Pictures

Spring Rate Front: - 5.31 kgf/mm
Spring Rate Rear: - 5.10 kgf/mm

Drop Front: - .6-.8 inches
Drop Rear: - .8-1.0 inches

Expected Release: Available Now
MSRP: $309

Super Down SUS (H059S) - Pictures

Spring Rate Front: - 5.36 kgf/mm
Spring Rate Rear: - 5.10 kgf/mm

Drop Front: - 1.4-1.6 inches
Drop Rear: - 1.4-1.6 inches

Expected Release: Available Now
MSRP: $339
Swift Springs:
SWIFT SPEC R (4H917R) - Pictures

Spring Rate Front: - 6.3 kgf/mm
Spring Rate Rear: - 7.4 kgf/mm

Drop Front: - 1.0 inches
Drop Rear: - 1.0 inches

Expected Release: Available Now
MSRP: $419
Spoon Sports:
Spoon Progressive Springs (51400-FK8-001) - Pictures

Spring Rate Front: - 5.0 kgf/mm
Spring Rate Rear: - 4.9 kgf/mm

Drop Front: - .79 inches
Drop Rear: - .79 inches

Expected Release: Available Now
MSRP: $609
Tein Springs:
Tein S-Tech (SKHK8-S1B00) - Pictures

Spring Rate Front: - 5.3 kgf/mm
Spring Rate Rear: - 4.8 kgf/mm

Drop Front: - 1.0 inches
Drop Rear: - 1.0 inches

Expected Release: Available Now
MSRP: $345
Whiteline:
Performance Springs (WSK-HON017) - Pictures

Spring Rate Front: - 4.5 kgf/mm
Spring Rate Rear: - 5.1 kgf/mm

Drop Front: - .79 inches
Drop Rear: - .79 inches

Expected Release: Available Now
MSRP: $259

I will update with more brands once I start getting more info, but so far this is a very good start!



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Kami Speed

Kami Speed

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Glad to see Swift already doing R&D
yessir, they already have a set of Type R springs at their location and they are testing as we speak. We should get more info in the coming weeks but so far its a pretty good list
 

CTR1633FK2

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Someone (All-knowing?) posted the OEM springrate in this forum. It is known already. It was approx 4.5 kg/mm front and rear.
 

Dr_Drache

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why is swift good because they are a niche brand? that's about as stupid as it comes, they are good sure, but not because they are a niche brand.
 
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Kami Speed

Kami Speed

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why is swift good because they are a niche brand? that's about as stupid as it comes, they are good sure, but not because they are a niche brand.
Meant to say that because they're niche they can focus on Springs for the limited vehicles they make. They're not like other brands like Eibach and Tein that produce springs and coilovers for so many cars that they're sometimes spread thin. Swift being a niche brand allows them to focus on what they do best which is make awesome springs.
 
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jonnys_honda

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Meant to say that because their niche they can focus on Springs for the limited vehicles they make. They're not like other brands like Eibach and Tein that produce springs and coilovers for so many cars that they're sometimes spread thin. Swift being a niche brand allows them to focus on what they do best which is make awesome springs.
I don't agree with any of your comments.

Eibach does one vehicle at a time with proper R&D (their facility is all in-house)
Tein is also top quality.
 
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Kami Speed

Kami Speed

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I don't agree with any of your comments.

Eibach does one vehicle at a time with proper R&D (their facility is all in-house)
Tein is also top quality.
lol honestly I am not bashing Eibach or Tein, they have their own strengths within the industry. We could get into it and find no definitive proof as at the end of the day it's all a matter of opinion. I was just trying to clarify Swift's strength as a niche spring brand being able to focus on springs for a small selection of cars.
 

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