Bicycle frame updating
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Between downhill stages, the racers have to climb to get to the next course, so there is a premium on ventilation and light weight, and riders are sometimes willing to compromise on protection to get that.
We recommend looking for a helmet that fits you well and has a rounded, smooth exterior with no major snag points.
There are unpublished indications that the lightest and thinnest helmets do not perform well when impact levels exceed those required by the CPSC standard.
Consumer Reports has a 2016 article that covers 34 models.
Note the thin strips of the MIPS layer in this helmet, raising questions about how effective it would be.
POC has a liner partially composed of a honeycomb material.
Some new developments, including MIPS, we consider unproven.
Almost all of the helmets described below meet standards and offer good if not excellent protection.
The level of protection needed would seem to call for downhill helmets, but enduro models may or may not meet the more demanding ASTM F1952 downhill mountain bike racing standard.
Extended coverage helmets have become more fashionable this year.
Summary: Our review finds no radical safety improvement this year that would compel you to replace your current helmet.
New technology has finally come to the marketplace, but there are no independent public test results confirming better performance.
There are new models in 2016 that are worth a look if you need a new helmet.