Might need to check with them. I think it started out with them originally making only the 18mm one, then they dropped that and changed over to a 20mm one. However, I think due to demand, they now have changed back to the 18mm one. RSB for the Euro isn't something they keep making constantly, they usually make a batch, and when it runs low and there's still demand, they make another batch. I suspect that their 20mm batch ran low, so they decided to make a batch of 18mm since people were asking for it. Last year, when I was looking for one, they only had 20mm in stock.Originally Posted by iRoik
There's nothing wrong with Whiteline, infact, I reckon it's a good choice because you save a lot on shipping. Stuff from the states might be half hte price, but shipping easily adds $200 to the overall cost, making it not really worth while. From memory, some designs had adjustment holes, which made the RSB seem softer or harder (i.e. there were 3 mounting holes on either side, one would make the RSB act as if it was 1mm thinner thus softer, where as one would make the RSW act as if it was 1mm thicker thus harder). If you're a set and forget type, a standard 18mm is fine. I see that the 18mm is now more expensive than the 20mm one though.
From memory, factory bar was 15mm (I think the Auto was 14mm) meaning the 18mm would be 107% stiffer. People who went 22mm would find it was 363% stiffer which is a bit overkill IMO.
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