Depends on which graphic you got. The Apex Bold White 8.5 Twin is a 14.25", rode and measured it - 14.25" as listed.
The new Spectrum Full 8.5 Twin is listed as 14.38, ordered one but it's still enroute so I can't verify it.
The Apex Bold White 8.5 Twin does feel way too long (32.375"), going 14.38" would have been a better option.