As far as I know rev3
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(rev2+?) turbos should have a 19mm arb front and rear
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I've got a stock 19mm bar on the front of mine with the standard 19mm super pro bush that comes in their sw20 kit
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- I've got the rear ARB bushes in the garage, haven't got round to fitting them yet.
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I'm sure the external dimensions of the bush/bracket are the same across all
Models/revisions
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- have you contacted super pro? They're Aus based and really friendly.
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Also it may be paint/dirt/whatever that is bumping your 22m measurement to 22.5?
EX MR2 owner, currently on a
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'00 Honda CBR600 Follow me on Instagram
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@c35rob