RUST Magazine: RUST #50

ON TEST
ON TEST
KLIM F5 KOROYD HELMET
KLIM have borrowed tech from the cycle
and ski industry with their upgrade of the F5
off-road helmet. Koroyd – which described
simply, looks like a bunch of plastic straws
on end – creates an impressively lightweight
extremely breathable yet high-performance
energy absorber (an alternative to the usual
EPS – expanded foam). Of course, Koroyd isn’t
a bunch of straws, instead we’re talking copolymer
extrusions with an inner tube with
high compressive strength and an outer tube
which is there to be welded together with the
other tubes. In tests, say KLIM, Koroyd proved
to absorb 48% more energy than EPS. Being
so many tubes it also means there’s a high
volume of air within the helmet that’s easy to
exhaust. These sit within a high-quality carbon
fibre outer shell, while the inner surface
features a removable, washable moisturewicking
Drylex comfort liner, not to mention
the MIPS system which reduces rotational
forces in impacts.
So, with 18 intakes and eight exhausts yes
the helmet seriously ventilates and hot heads
will love it for this. However, pulling from their
snowmobile experience, KLIM also added
removable Windstopper liners for the helmet
and chinbar which were super-effective and
make the helmet a four-season item. Although
this helmet is not designed for ADV, we found
the peak doesn’t create a massive airbrake
and sitting at 90mph on our Ténéré 700 it was
quite comfortable. We always use ear plugs, but
note the helmet to be no noisier than any other
dirt/ADV helmet. The fastening is not your
usual D-ring, instead by a ‘Fid-Lock’ system,
which utilises a super-strong magnet and a
hook for a non-fiddly super-quick fastening.
It’s a leap of faith if you’ve not encountered
this system before, but the fixing stays secure
and has been extensively tested.
We love the quality and the superior
comfort. The ascent / vivid blue colorway also
seems to highly visible – good for safety. It
is in all measure a quality item – and priced
accordingly
Contact: KLIM.com
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RRP: US$649.99
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