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Old 03-28-2004, 11:05 AM   #1
mr_yellow
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Default Why is it that 02/03 Rear swaybars arn't compatible with 04+ imprezas?

I can't find the thread i read it in, but subie gal mentioned that you cannot just swap a rear sway bar from an MY02/03 into an MY04+.

is this true? if so, why?

Is the bar shaped that much differently?
Or is it not compatible with the mounts/bushings/endlinks??
What if youget the bushings that match the bar?

I'm all confused! The cars should be functionally identical right? I don't see any reason why subaru would redesign the swaybar of all things...
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Old 03-28-2004, 11:12 AM   #2
nunyo
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They aren't compatible because the rear suspension has changed enough that they had to reroute the swaybar. Maybe next time those inconsiderate engineers will call you before doing their jobs.
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Old 03-28-2004, 11:21 AM   #3
mr_yellow
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easy on the sarcasm there... You might actually start sounding like you know something

Thanks for the info though, my plans for a cheap 02/03 swaybar upgrade is now down the drain. =(
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Old 03-28-2004, 11:34 AM   #4
poison
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Get a cheap 04 WRX takeoff, what's the problem? Even new I think they are only $80 or so at the dealer. Better than $120 for some aftermarket piece of metal that will do the same thing.
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Old 03-28-2004, 01:29 PM   #5
mr_yellow
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Well, this is for my 04TS. and I was hoping to just make the jump to an 02 Sedan Rearsway since it's the only 20mm bar besides the STi. I know it'll sound stupid, but i don't want to just get the 04 bar cause it's only 17mm and if I'm going to swap out this part, i might as well go as agressive as the car will allow.

I guess i should be on the lookout for a used STi rear swaybar then...
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Old 03-28-2004, 01:44 PM   #6
del105
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The main reasons a 02+ swaybar won't fit is the lateral links are different so the STI droplinks won't attach properly and the bend that goes over the exhaust is different.

So if you have a non stock axleback and different lateral links it will fit.

The real problem with the STI rear is if you want to run a much larger bar you are going to break your lateral links and droplinks where they attach.

I posted a picture yesterday of my car with a 26mm 02+ swaybar installed on my STI.

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Old 03-28-2004, 02:04 PM   #7
poison
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Quote:
Originally posted by mr_yellow
Well, this is for my 04TS. and I was hoping to just make the jump to an 02 Sedan Rearsway since it's the only 20mm bar besides the STi. I know it'll sound stupid, but i don't want to just get the 04 bar cause it's only 17mm and if I'm going to swap out this part, i might as well go as agressive as the car will allow.

I guess i should be on the lookout for a used STi rear swaybar then...
The 04 sedan RSB should still be 19mm, like the 03 sedans? Wagon's are 17mm. Sure 20mm is better, but more expensive, probably.
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Old 03-30-2004, 12:19 PM   #8
mr_yellow
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THe 04's RSB on the wrx is actually 17mm on both sedan and wagon.l.. This is coming straight off the FSM.

Thanks for all the info guys, really helped me figure out what i can and can't do.
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Old 03-30-2004, 01:10 PM   #9
poison
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Hey, good to know!
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Old 03-30-2004, 04:27 PM   #10
subieworx
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The ONLY differences between the 04(non STI) and 03 is the bushing shape and the size, 17mm for 04. The bar is the same identical shape as the 03. Subaru upgraded the sway bar mounts on the 04 and hence use a different bushing than the 03's. That's why you can buy a bar like progress, hotchis, or perrin that replaces the mounts and it will work with 02, 03, or 04. There are no other differences other than those.
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Old 03-30-2004, 05:32 PM   #11
del105
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The lateral links are also different where your droplinks connect. If you put 02+ drop links and a fat bar they will break.
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