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WRX vs STI rear diff

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Old 14 September 2016, 08:39 AM
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alex_00s
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Question WRX vs STI rear diff

Is this right or wrong?


Rear Diff on a 2003 WRX = R180
Rear Diff on a 2003 STI = R180


Basically, I want to know if I can use 2003 WRX hubs on my 2003 JDM STI?

Will my R180 shafts fit the WRX hubs?
Old 14 September 2016, 08:48 AM
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http://www.catherineandken.co.uk/sti/trans.html
Old 14 September 2016, 08:55 AM
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alex_00s
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thank you that's a wealth of info, but doesn't answer my question, or if it does I cant extract the answer from it?
Old 14 September 2016, 11:38 AM
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alex_00s
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I need to use 2003 WRX backing plates on my 2003 STI hubs to achieve my goal...

I need the 171mm handbrake assembly with 2 pot mounting on my R180 diff/shaft/hub set up.

Didn't realise I could just swap the backing plates around... which I hope is the case
Old 21 September 2016, 01:00 PM
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your WRX has an R160 rear diff and nothing is interchangeable between the 2x set-ups.........

pretty sure the backing plates wont swap either as the mounts are a different pitch as well as other differences
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