SurreyG

After swapping my rear Sway on my G37x to the G37s rear Sway along with installing Swift Springs, it was day/night difference. I highly suggest Swift springs if you have a 37x.

yonith

How much quicker would the Swift springs kill the OEM struts?

iCrap

iTrader: (8)

I replaced my struts with KYB at the same time as the springs. I suggest doing that as well.

yonith

Got the sways installed today - stiff in the front, middle in the back. WOW what a difference! This definitely feels like how the car should have come stock. It doesn't feel like a "modified" car. I'd be hard pressed to say I feel much if any degradation in ride quality. Definitely happy I got this done. Thanks for everyone's help and suggestions!

mjnoles1

My 2013 G37xs feels like a big boat as well.

What's the tradeoff if you compensate for the stiffer sway bars?

Rear tires may slide out if you push too hard or not even hard as the rest of the suspension is not set up for stiffer sway bars?

As I will not only be driving this car on regular roads, but living in Cleveland, I will be driving it on snowy, icy, crappy roads and I do not want to compromise safety.

yonith

I considered this given that my back slid out the other day when I pushed it too hard around a turn when it was drizzling out. This was before the sways. Keep in mind I really wasn't even going that fast - certainly not fast enough to have caused my previous AWD car to slide out ('08 Subaru Legacy GT). I've just come to accept that this is basically a rwd car if you're going above 15 or 20 MPH, and you have to drive accordingly whether you have sway bars or not. With that in mind, any difference in traction would be slight enough to make upgrading still very much worth it.

iCrap

iTrader: (8)

The only tradeoff is you do have to be aware of how you drive. The back CAN slide out much easier with the stiffer bar in the rear. That said i've never had it whip out dangerously, even when driving hard.

The only other tradeoff would be ride comfort - but honestly in in the two cars i have installed thicker bars I personally haven't noticed any degradation of the ride comfort.

SurreyG

Do you have the KYB part numbers? Were they for the X specifically?

Mr.Grant

iTrader: (2)

I was about to ask the same thing, also is anyone think it will also be an good idea to replace the shocks to along with the struts or is all this a little over kill and the sway and spring upgrade should suffice. I just dont want to waste money if its not needed lol.

iCrap

iTrader: (8)

KYB Shocks(340010, 340011, & 34908) and Eibach springs ( 6399.140)

Yes they were for the AWD.

I put the KYB at the same time also because I thought my stock ones were blown. The car was wiggling around and bouncing, it was pretty terrible. Now it's GREAT. car feels so stable and corners flat

SurreyG

Wow weirdly when Googled and checked on Amazon those part numbers don't show that they fit on the 37X?

Anyone else know the part numbers for the KYB shocks that fit the AWD Sedan?

Sorry bro, don't mean to knock on your response.

iCrap

iTrader: (8)

Hmmm... I dunno. I comfirmed the fitment with one of the guys at AutoAnything before buying too. And it all went in without issue. Did it myself.

SurreyG

Okay, you have 3 numbers, which are front? and which are rears? Why the three model numbers?

Thanks.

iCrap

iTrader: (8)

The part numbers are front right and left, and the rear ones use the same part # for both sides. That's why there are 3 model numbers. Put those into the auto anything site and it should come up.

CPJ LB

For the rear shock, you're missing an extra digit should be: 349089 . Also, I believe the parts you listed were based on your year (2007). I don't think the front struts are different, but KYB may have different part numbers for the 2010+ 37AWD sedans.... The rears should be ok.