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Old 10-13-2010, 12:32 AM   #51
2wickedWRX
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^^^^^ i would also like to know. Are the 07 wrx sedan sways the same as the 06 sedan?
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Old 10-13-2010, 05:58 AM   #52
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yes. 5 characters
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Old 02-21-2011, 11:19 PM   #53
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Does anyone know why they went with a 17" rear sway bar on the wagons? Is there some kind of benefit in the 20/17 combo for wagons or would a 20/20 be better in this setup?

I'm kind of new to these things. Still trying to work everything out before buying
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Old 02-21-2011, 11:24 PM   #54
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Quote:
Originally Posted by pocketdrummer View Post
Does anyone know why they went with a 17" rear sway bar on the wagons? Is there some kind of benefit in the 20/17 combo for wagons or would a 20/20 be better in this setup?

I'm kind of new to these things. Still trying to work everything out before buying
"it depends"

read the swaybar FAQ
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Old 02-22-2011, 01:21 AM   #55
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Quote:
Originally Posted by ButtDyno View Post
"it depends"

read the swaybar FAQ

I did, but I'm not sure exactly how much under steer there is compared to what a 20mm would have. It seems odd to have the sedan with one setup and change it for the wagon. Was the choice due to the thinner wheels or additional weight at the rear?

I know a larger sway bar in the rear will make it step out more, but to my understanding, the extra weight in the rear will probably exacerbate this effect. So, my theory (from a complete noob's point of view) would be that the smaller bar was in the original design for some reason or another, specifically.

I guess I need to understand the logic that went into the original design before I can really figure out how I'd like to alter it.
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Old 02-22-2011, 06:29 AM   #56
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Quote:
Originally Posted by pocketdrummer View Post
I did, but I'm not sure exactly how much under steer there is compared to what a 20mm would have. It seems odd to have the sedan with one setup and change it for the wagon. Was the choice due to the thinner wheels or additional weight at the rear?

I know a larger sway bar in the rear will make it step out more, but to my understanding, the extra weight in the rear will probably exacerbate this effect. So, my theory (from a complete noob's point of view) would be that the smaller bar was in the original design for some reason or another, specifically.

I guess I need to understand the logic that went into the original design before I can really figure out how I'd like to alter it.
Perhaps you should look at it from a different angle. What is the car doing now that you don't like and how do you fix it. If you find you understeer too much for your liking then a small increase in rear bar diameter might help you find the place you're looking for.
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Old 02-23-2011, 07:00 AM   #57
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The sedan is seen as the Performance Car of the brand, not the wagon. So the wagon is set up with a milder suspension tuning, i.e. smaller rear swaybar(02/3) and narrower track than the sedan. The bug-eyes were the first iteration of the new-age Impreza and Subaru wanted to maintain the handling prowess that made the GC so popular. The Sedan was seen as their performance model so it was given the wider track and larger rear swaybar compared to the family truckster wagon. So the wagon got more sedate handling characteristics out of the box. As far as the wider track, there have been rumors over the years about it being due to tax reasons in japan, as the wider track cars are taxed higher. I've seen this in print (Subaru Impreza, Brian Long, 2003) but I'm not too sure as to its truth. There are normal sedan Impreza models in Japan that did not have the wider track of the WRX. After 03 Subaru went with a smaller rear swaybar on the sedan, most likely because people were wrapping the cars around poles due to lift throttle oversteer issues.
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Old 02-23-2011, 11:14 AM   #58
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please, this thread is for facts about swaybars. Discussion of subaru's design strategy or how to apply it to your car should be taken to another thread.
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Old 02-23-2011, 04:42 PM   #59
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Quote:
Originally Posted by Frank A View Post
please, this thread is for facts about swaybars. Discussion of subaru's design strategy or how to apply it to your car should be taken to another thread.
I personally disagree. This is perfectly relevant to sway bars. If there is a logical reason behind Subaru favoring a larger sway bar in the front, I'd like to know why. Perhaps many people (who don't have a research facility of their own) may have overlooked something. It's either for performance, safety, or cost... knowing which category it falls into will help us understand the logic behind it and therefore influence more informed purchases.
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Old 02-23-2011, 10:47 PM   #60
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Quote:
Originally Posted by pocketdrummer View Post
I personally disagree. This is perfectly relevant to sway bars. If there is a logical reason behind Subaru favoring a larger sway bar in the front, I'd like to know why. Perhaps many people (who don't have a research facility of their own) may have overlooked something. It's either for performance, safety, or cost... knowing which category it falls into will help us understand the logic behind it and therefore influence more informed purchases.
It is emphatically NOT relevant to compiling a list of swaybar sizes.
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Old 07-03-2011, 03:24 PM   #61
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I measured my jdm 97 sti fsb so you can add it to the list it measured 20mm
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Old 07-03-2011, 10:24 PM   #62
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anybody know the 2011 WRX front and rear sizes?
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Old 07-04-2011, 04:41 PM   #63
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Quote:
Originally Posted by FromEvoToRS37
anybody know the 2011 WRX front and rear sizes?
21mm front, 16mm rear
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Old 07-04-2011, 10:42 PM   #64
Frank A
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nevermind - we all have hatches so I assume we are talking about the hatch...
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Old 07-07-2011, 03:04 AM   #65
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Quote:
Originally Posted by rolling_death

21mm front, 16mm rear
This for the 2011 sedan or hatch?
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Old 10-13-2012, 02:56 PM   #66
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looking for mild upgrade to FRONT of 06 WRX wagon that will work without 'drama' with kartboy drop links.

any suggestions?

thanx
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Old 11-26-2012, 04:50 PM   #67
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How about 2010 wrx I just bought one and understand the 2011 suspension was a big improvement so want to update the suspension right away and need to know what is different . Not interested in going to after market .



Quote:
Originally Posted by rolling_death View Post
21mm front, 16mm rear
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Old 11-26-2012, 11:00 PM   #68
paulpat
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Thanks
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Old 09-09-2014, 01:58 PM   #69
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Does the wide body 2011-2014 WRX use the same length sway bar as the 09-10?
(I know they use the same thickness 21mm front)
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Old 08-19-2016, 07:41 PM   #70
mikeblo
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i want to know if i can install an aftermarket whiteline sway bar from a wrx to an 04 sti with the oem link kit?
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Old 08-20-2016, 06:29 PM   #71
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Quote:
Originally Posted by mikeblo View Post
i want to know if i can install an aftermarket whiteline sway bar from a wrx to an 04 sti with the oem link kit?
'04 WRX?
Front: Yes. The rear is more difficult as the bars are different widths.

Edit: Just saw your other post: '02-'07 is the same for USDM cars.

Last edited by Web Foot STi; 08-20-2016 at 06:47 PM.
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Old 12-17-2016, 08:43 PM   #72
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Anyone here have the info on the stock FSB and RSB sizes for a 2017 WRX base? Been searching but the car is too new for regular sources. My '15 green Impreza was totaled by an idiot on the opposing traffic who made a left in front of me. I upgraded to a Rally blue WRX base 6 speed.
Thanks

Last edited by NubImpreza; 12-19-2016 at 10:21 PM.
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Old 10-24-2018, 09:08 PM   #73
S2000_Europe
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2017 and 2018 STi has 24mm front and 20mm rear

2018 Type RA has 24 mm front and 19mm rear (same part #20451FG020
same as 2011 STI rear bar)

Last edited by S2000_Europe; 10-25-2018 at 03:49 PM.
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Old 08-01-2020, 07:03 PM   #74
2slofouru
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Bumping this up, would be a very helpful thread if the OP hadn't stopped posting eleven years ago.

Can a moderator update the first post whenever someone shares new specs? The first post stops at 06 and is missing a lot of model and trim specific information.


Thanks
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