  We consider DM that only couples to SM gauge bosons and fills one gauge
multiplet, e.g. a fermion 5-plet (which is automatically stable), or a
wino-like 3-plet. We revisit the computation of the cosmological relic
abundance including non-perturbative corrections. The predicted mass of e.g.
the 5-plet increases from 4.4 TeV to 10 TeV, and indirect detection rates are
enhanced by 2 orders of magnitude. Next, we show that due to the
quasi-degeneracy among neutral and charged components of the DM multiplet, a
significant fraction of DM with energy E > 10^17 eV (possibly present among
ultra-high energy cosmic rays) can cross the Earth exiting in the charged state
and may in principle be detected in neutrino telescopes.
