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  • Giro Quarter MIPS Helmet
  • Giro Quarter MIPS Helmet
  • Giro Quarter MIPS Helmet
  • Giro Quarter MIPS Helmet
  • Giro Quarter MIPS Helmet
  • Giro Quarter MIPS Helmet Detail
  • Giro Quarter MIPS Helmet Detail
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  • Giro Quarter MIPS Helmet Side
  • Giro Quarter MIPS Helmet Side
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GiroQuarter MIPS Helmet
Sale $50.98 - $64.95

Item # GIR00AB

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  • Matte Metallic Coal, M ($64.95)
  • Matte Black, S ($64.95)
  • Matte Black, M ($64.95)
  • Matte Black/Rasta, S ($50.98)
  • Matte Black, L ($64.95)
  • Matte Vermillion, S ($53.96)
  • Matte Iceberg, M ($59.95)
  • Matte Iceberg, L ($59.95)
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Item # GIR00AB

Not afraid of getting dirty.

Giro's lowest profile helmet is now available with more protection than ever for your most thrilling rides. Take the Quarter MIPS Helmet to the trails for affordable protection, without added bulk. The helmet includes an outer shell made of impact-absorbing ABS plastic, and it has the distinction of being the lightest Giro helmet made using ABS. The shell surrounds an inner EPS foam liner with riveted webbing anchors to reinforce its strength, and now includes MIPS for added safety. MIPS, or Multi Directional Impact Protection System, refers to the Swedish technology that can be added to helmets in the form of a thin inner layer that rotates slightly upon impact to absorb the brain-damaging rotational energy created in certain crashes. Less rotation, less likelihood of a head injury.

As an extra, Giro made the decision to add a polyurethane coating around the outside of the EPS liner to give the foam some protection in the areas where it's most likely to be damaged during bumps and scrapes. The included Fit Kit foam pads are removable so you can get a customized fit, and they can even be washed, if you're so inclined. Eight vents keep the Quarter breathable, and rather than use their universal shell size, Giro makes the Quarter in three Super Fit sizes to make sure you're getting the right fit.

Tech SpecsSize
Tech Specs
Shell Material
ABS plastic
Impact Foam
EPS foam
Multiple Impact
8 vents
Fit Adjustment
Fit Kit pad system
Full Face
Recommended Use
mountain biking
Manufacturer Warranty
1 year


Adult Cycling Helmets
Super Fit™
Head Circumference

18.5 - 20in

(47 - 51cm)

20 - 21.75in

(51 - 55cm)

21.75 - 23.25in

(55 - 59cm)

23.25 - 24.75in

(59 - 63cm)

24 - 25.55in

(61 - 65cm)

Head Circumference

21.25 - 24in

(54 - 61cm)

19.75 - 22.5in

(50 - 57cm)

22.75 - 25.5in

(58 - 65cm)

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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Great helmet, great price!

  • Familiarity: I gave it as a gift but have feedback to share

I gave this as a gift to my nephew, he is 9 years and his head is 21.5" in circumference, I went with the medium (21.75 - 23.25in) and it fits him well but has plenty of space to allow for growth in the next few years. The price is great for a helmet with MIPS! He loves the simple style and matte black color, much more 'mature' than his spider man helmet from when he learned how to ride a bike.

Unanswered Question

how do i get an xtra large

Unanswered Question

How much does the M size weigh?