Small crack on head tube

have it checked out. you dont want to screw around with a potential crack on the head tube.

This is an extremely common problem, the root cause is that Cannondale decided to use a stupid metal pin as their fork rotation limiter and it impacts the side of the headtube whenever the fork is turned too far, [leading to a crack](https://youtu.be/_xBAgEEtcGQ?si=m3MhzP_SYaaAp0bw&t=83). There are [tons](https://www.reddit.com/r/bikewrench/comments/qedei3/cannondale_supersix_evo_head_tube_crack/) [of](https://www.reddit.com/r/cycling/comments/nzxupv/am_i_screwed_head_tube_crack_on_my_dads_first/) [complaints](https://www.reddit.com/r/cannondale/comments/vgermm/new_supersix_evo_headtube_issue/) [about](https://www.reddit.com/r/bustedcarbon/comments/rwcmdz/questionable_supersix_evo_headtube_crack/) [this](https://www.reddit.com/r/cannondale/comments/vwoyrz/recent_experiences_with_replacement_frames_for/) [exact](https://www.reddit.com/r/cycling/comments/1apezqv/cannondale_supersix_himod_evo_v3_damaged_fork_and/) [problem](https://www.reddit.com/r/cycling/comments/oxtjso/is_this_kind_of_rubbing_normal/).

General consensus is that, no, it is no longer safe to ride. It’s an actual crack and delamination in carbon, which has the potential to spread and eventually lead to a catastrophic failure. You need to either get it repaired or (better yet) just avoid this entire generation of Supersix Evo frame entirely, because it’s inherent to the design of the frame and may happen again even if you get it repaired.

Cannondale Evo V3. Not structural. It’s from the fork stop being forced. All groovy.

I don’t think I would willingly spend my money on a bike I plan on riding if it already shows signs of a catastrophic failure