Style number for QR rear dropout
170 QR or 177 Thru (depending on wheel)



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SMALL APEX
A 12.5
B 75.5
C 28
D 44
E 122
F 102
G 57.5CM

MED APEX
A 13.5
B 77.5
C 28
D 51.5
E 124.5
F 104
G 60CM

LARGE
A 14.5
B 79.5
C 28
D 55
E 126.5
F 106
G 62.5CM