Manford

What size is the standard rear arb on a blob wrx?

If i wanted to fit an sti version, do you have to change the mounting brackets with it? or just the bushes?

Mite be a daft question, thinking of doing it just want to check whats involved before I start.

Manford

Nobody has any pearls of wisdom on this?

BrownPantsRacing

iTrader: (6)

17mm I think.

Same brackets, different bushes.

Manford

Cool, thanks.

Can you swap it with exhaust in place?

BrownPantsRacing

iTrader: (6)

I haven't changed mine yet as that's next months job when it turns up so can't be sure, but I believe so yes you can do it without removing the exhaust.

TECHNOPUG

iTrader: (1)

No need to remove the exahust or even raise the car (although is easier). Getting the ARB back in can be a pain with the exahust on / car not raised though.

Neeko1988

Sorry to high jack this thread, i have a blob WRX and would like to change the rear arb bushes to polyflex ones, anybody know for def what size i need? thanks

BrownPantsRacing

iTrader: (6)

I am almost positive they will be 17mm. However you can get under the car to measure the ARB without even jacking the car up. So might be worth checking.

There are a lot of brands of uprated larger bushes but not many people making 17mm uprated ones from what I found. Powerflex do I believe.

Neeko1988

Brilliant Thanks!