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2GX | Summary | 
Measure from outside of seat tube at back post to the outside of the opposite seat tube at back post.
XSW1  | 12" 12 13" 13 14" 14 15" 15 16" 16 17" 17 18" 18 19" 19  | |
XSW2  | 20" 20 21" 21 22" 22  | 
