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Lowering Springs Comparisons

Hey Folks, I've been putting this list together as much as possible. WE have a lot of NEW and existing members who ask about lowering springs, And so I hope

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Old 08-27-2013, 12:14 AM   #1 (permalink)
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Arrow Lowering Springs Comparisons

Hey Folks,

I've been putting this list together as much as possible.

WE have a lot of NEW and existing members who ask about lowering springs, And so I hope this will help since this will be primarily for spec comparison.

I need for folks to let me know what more is available with specs of course so I could include them to the list as this will be stickied for easy reference.






Stock.................................................. ...Drops...........................................Spring Rates


OEM Stock Springs.................................................. ...........................FRONT: 7.5K REAR: 8.0K

OEM Nismo Springs.................................................. ...........................FRONT: 8.1K REAR: 9.1K


Aftermarket Springs

Ark GT-S Lowering Springs...............FRONT: 1.4'' REAR: 1.2''.........................FRONT: 9.5K REAR: 10.7K

Ark GT-F Lowering Springs...............FRONT:1.4'' REAR: 1.0''.........................FRONT: 9.5K REAR: 10.7K

Eibach Pro Kit Lowering Springs........FRONT: 0.9'' REAR: 0.8''........................FRONT: 8.6K REAR: 9.5K

Tein Lowering Springs .....................FRONT: 0.9'' REAR: 0.7".........................FRONT: 8.5K REAR: 9.4K

Tanabe TGF150 Lowering Springs .....FRONT: 0.8'' REAR: 1.0''.........................FRONT: 8.8K REAR: 9.1K

Tanabe TNF150 Lowering Springs .....FRONT: 0.8'' REAR: 1.0''.........................FRONT: 5.9K REAR: 6.8K

H&R Sport Spring Lowering Springs ..FRONT: 1.3" REAR: 1.0".........................FRONT:? REAR:?

Swift Spec-R Lowering Springs .........FRONT: 1.2'' REAR: 1.0''........................FRONT: 10K REAR: 10.5K

Megan Lowering Springs ..................FRONT: 1.5'' REAR: 1.5''........................FRONT:? REAR:?..

Ti2000 RS-R Lowering Springs ..........FRONT: 0.6'' REAR: 0.6''........................FRONT: 8.1K REAR: 8.8K
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Last edited by Trips; 08-23-2015 at 10:00 PM.
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Old 08-27-2013, 12:22 AM   #2 (permalink)
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Nice Thread Sir. Some measly Rep for ya.
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Old 08-27-2013, 12:23 AM   #3 (permalink)
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Question, I always thought mounting lowering springs on stock shocks will blow the stock shocks prematurely. Is this the case with the stock 370z shocks?
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Old 08-27-2013, 12:27 AM   #4 (permalink)
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There is a limit to how much drop the stocks will take, and the more aggressive the drop? The higher chances of premature wear or blowout.
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Old 08-27-2013, 12:34 AM   #5 (permalink)
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The Swifts are specifically designed to work with your oem struts so they won't put much more stress than oem spring. I've had an og member telling me he is still running on his oe shocks 2 years after the swift installed, even with the occasional hard driving on the track. About 90% of the owners here use Swift spring, and for good reason.
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Old 08-27-2013, 12:41 AM   #6 (permalink)
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Awesome! Thanks for the info. I'll probably get the swift springs but I'll still probably get some Tokico or KYB shocks just to be safe if I don't get coilovers.
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Old 08-27-2013, 12:46 AM   #7 (permalink)
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Eibach pro kit F 8.6kg R 9.5kg
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Old 08-27-2013, 09:15 AM   #8 (permalink)
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Need to add the stock NISMO springs to this
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Old 08-27-2013, 10:51 AM   #9 (permalink)
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Great info!!!
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Old 08-27-2013, 10:13 PM   #10 (permalink)
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Quote:
Originally Posted by Zbrah View Post
The Swifts are specifically designed to work with your oem struts so they won't put much more stress than oem spring. I've had an og member telling me he is still running on his oe shocks 2 years after the swift installed, even with the occasional hard driving on the track. About 90% of the owners here use Swift spring, and for good reason.
Tein springs were developed to use the OEM struts as well. We should put up the stock springs as well.
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Old 08-27-2013, 11:10 PM   #11 (permalink)
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Quote:
Originally Posted by Chuy View Post
Tein springs were developed to use the OEM struts as well. We should put up the stock springs as well.

Thank You
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Old 08-28-2013, 12:17 AM   #12 (permalink)
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Thank G!

H&R Does not publish spring rates and explains it here.

H&R Special Springs, LP Spring Rate

Also, it is recommended to swap out oem shocks when installing lowering springs.
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Old 08-28-2013, 01:16 AM   #13 (permalink)
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Very good info. Hopefully people will read this before posting.
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Old 09-15-2013, 03:06 PM   #14 (permalink)
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If swift springs are designed to work with stock struts, does it make sense that less drop would be even better, (i.e. Eibach, or tein)?
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Old 09-15-2013, 03:34 PM   #15 (permalink)
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Quote:
Originally Posted by seizer8 View Post
If swift springs are designed to work with stock struts, does it make sense that less drop would be even better, (i.e. Eibach, or tein)?
Yes.

Remember that the more of a drop the shorter the shock life when it comes to lowering springs.
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