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Discussion Starter · #1 ·
Hi all,
I am looking for some help from those of you who own/have owned a Ridley. I am in the market for a Helium, but am not sure if I should go with a size S or XS. I am 5'8" with a 32 inch inseam. My other bicycles include a Look 595 in size M and a BMC SLC01 Pro Machine in a size 53, both of which fit me well. From what I can tell by comparing the geometry, size S in the Helium should work but I've also read that Ridley's frame sizes don't always match the listed geometry numbers. If I can make a XS work, I can get a good deal on a Helium SL.
Any help would be appreciated.

-Rich
 

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I just looked up the geo chart and for what it's worth (not much) I'm 5' 8" and the XS size would be perfect for me.

Does BMC even make a size 53? I only saw 51 then 54.
 

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Discussion Starter · #3 ·
Thanks for your reply, Jay. I think I am going to go with the XS.

BMC did make a 53 in the SLC01. It seems their newer frames have different sizing.
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