The newly added bicylces (for example "vn_o_bicycle_01") will explode when they are damaged enough. While this is the usual vehicle behaviour, bikes usually dont explode when you break them.
As discussed on the beta tester channel, this might be an engine limitation and might not be fixable, however it might break especially with mods like ACE and will kind of ruin the immersion when crashing a bike and it explodes.