I was lucky enough to pick up a whiteline rear arb the other day
but it looked to be really rusty
I remember there being some discussion about bar diameter and some on fitment issues so i decide to have a look at the one i have here as i was going to clean it up and derust it.
Turns out it was only surface rust - so i brushed it down and repainted it gloss black.
I also have a powdercoated standard rear arb so here is a pic of the parts side by side for visual comparison.
(The oem on is nearest the camera and has some grey foam wrapped round the centre of it)
Observations
both oem and whitline are same shape
measured with digital vernier calipers on various parts of the bar
bar diameter oem 23 to 23.5mm
" " whiteline 22.6 to 23.2mm
Im sure whitleine say its a 22m dia bar and i think someone on here said they had a 24mm dia bar
Im saying its a 23mm dia bar the same as the oem one

im assuming the slight difference in diameter is down to the whiteline having rusted away slightly in some areas and also the oem one has a thicker than usual oem powdercoat.
to confuse things further-
the whiteline had the original yellow mounting bushes and they are stamped as being 22mm
so its a 23mm bar with 22mm bushings
