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Giro Tremor MIPS Helmet - Kids'


Item # GIR00G9

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Item # GIR00G9


For the little shredders.

Hitting the trail with your mini-me is close to the top of most parent's top-5 list, but you want to make sure your little shredder is safe when they saddle up. Starting from the top, The Giro Tremor MIPS Helmet offers some of Giro's best technology from its adult line, but sized down for pint-sized riders. With loaded features, ample vents, and styling that looks just like the grown-ups helmets, it's easy to see why the Tremor is a favorite among the trail-hungry adventure groms.

The show-stopper on this particular model is MIPS technology—short for multi-directional impact protection system, which can redirect energy and provide more protection in certain styles of impacts — a particularly handy feature if your little one sees every curb as a jump, and craves laps in the neighborhood pump track after school every day. Moving from the MIPS technology, the helmet is built with tough, in-mold construction bonds EPS foam with a tough polycarbonate shell, providing a full-coverage hardbody shell that shields from blows, and impact foam that absorbs hits. Inside, the helmet uses padding that's easy to remove and wash after a hot day on the trail, and also features quick-drying properties to keep sweat wicked away and out of their eyes during the ride.

Designers at Giro understand how quickly kids can grow, which is why the Tremor is decked out with a RocLoc fit system for fast and secure fit adjustments. The helmet comes in a one-size-fits-most, which has a generous size range that allows your grom to transition from one season to the next without having to shell out cash for a new helmet every year.

  • A grown-up level helmet for your little shredder
  • MIPS technology redirects energy in certain impacts
  • In-mold construction provides a hard shell for protection
  • EPS impact foam soaks up blows and absorbs big hits
  • Keep your grom cool and fresh with 18 vents and washable pads
  • RocLoc provides an easy and fast to use adjustable fit

Tech Specs

Shell Material:
in-mold polycarbonate
Impact Foam:
Fit Adjustment:
RocLoc Sport MIPS
Recommended Use:
cross-country, enduro, trail
Manufacturer Warranty:
1 year

Size Chart


Youth Helmets
Head Circumference 18.5 - 20in
(47 - 51cm)
20 - 21.75in
(51 - 55cm)
18 - 19.75in
(46 - 50cm)
19.75 - 21.5in
(50 - 54cm)
18.75 - 20.5in
(48 - 52cm)
19.75 - 21.75in
(50 - 55cm)
19.75 - 22.5in
(50 - 57cm)
Head Circumference 19.3 - 20.5in
(49 - 52cm)
20.5 - 21.9in
(52 - 55.5cm)
20.5 - 21.9in
(52 - 55.5cm)
21.9 - 23.2in
(55.5 - 59cm)
How to Measure:
For best results, use a tape measure to measure around your head where your hat would fit comfortably.

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Super Lightweight and Comfortable

    This helmet is lighter on my head than I was expecting which is a nice surprise! Another nice surprise that isn't shown in the product picture is that the chin strap doesn't have the annoying adjustable buckles where the 2 straps go from the helmet around your ears and join together at the chin. The straps are sewn together in the right place so its flat, light, and doesn't rub against my ears! This helmet is a youth helmet, but fits 50cm to 57cm heads (19.75in to 22.5in), so if you are an adult with a small head like me (51cm) then this helmet will fit you!