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  • POC Octal X Helmet
  • POC Octal X Helmet
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POCOctal X Helmet
Sale 20% Off$199.96 $249.95

Item # POC00B3

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Item # POC00B3

Pushing the limits of the Octal.

XC racers have long been known to adopt road helmets into their rides, with the lightweight feel, and total breathability, we can't blame them. However, road helmets prove to have one fault on the trail, and that's coverage, so POC tweaked the design just enough on the Octal with the Octal X Helmet to give you the lightweight feel you love, but a little more coverage for the protection you need when you're booking it through rolling miles of singletrack at top speeds.

As with the road version, the Octal X boasts extended coverage over the back of the head and at the temples for added protection no matter what surface you're riding on. True to its dirt-focused intention, the Octal X's shell extends to cover more of the liner foam than the Octal, which improves overall durability against errant trail debris without sacrificing lightweight functionality. It is still equipped with large vents to keep you feeling cool when you're pushing it up steep switchbacks. The vents also double for holding your shades after the ride is finished and you're enjoying your post-ride pilsner with the crew.

  • The Octal gets a little dirt friendly with the X
  • Lightweight and durable EPS shell construction
  • Aramid bridge tech reinforces the helmet structure for added protection
  • Extended helmet shell provides coverage for foam liner
  • Large vents promote cooling airflow
  • Size adjustment system dials in the fit
  • Eye garage securely holds most sunglasses
Tech SpecsSize
Tech Specs
Impact Foam
large vents
Fit Adjustment
size adjustment system
Recommended Use
Manufacturer Warranty
1 year


Head Circumference  21.7 - 22.8in
(55 - 58cm)
23.2 - 24.4in
(59 - 62cm)
Octal, Cerebel
Head Circumference  19.7 - 22in
(50 - 56cm)
21.3 - 23.6in
(54 - 60cm)
22 - 24.4in
(56 - 62cm)
Skull Orbic Comp, Skull Orbic X, Skull Comp, Super Skull Comp, Skull X, Skull Light, Receptor Bug, Sinuse, Receptor Bug Comm.
Head Circumference 20 - 20.5in
(51 - 52cm)
20.8 - 21.3in
(53 - 54cm)
21.5 - 22in
(55 - 56cm)
22.5 - 22.8in
(57 - 58cm)
23.3 - 23.5in
(59 - 60cm)
24 - 24.4in
(61 - 62cm)
Crane, Fornix, Fornix Backcountry, Skull Light II, Receptor Bug Adjustable, Trabec, Trabec Race, Receptor Flow, Skull Light Women's
Head Circumference 20 - 21.3in
(51 - 54cm)
21.5 - 22.8in
(55 - 58cm)
23.3 - 24.4in
(59 - 62cm)
Synapsis, Frontal, Receptor+, Receptor Backcountry
Head Circumference  20.9 - 21.3in
(53 - 54cm)
21.7 - 22in
(55 - 56cm)
22.4 - 22.8in
(57 - 58cm)
23.2 - 23.6in
(59 - 60cm)
Cortex DH
Head Circumference  20.9 - 21.7in
(53 - 55cm)
21.7 - 22.4in
(55 - 57cm)
22.8 - 23.6in
(58 - 60cm)
How to Measure:
Measure around your head where your hat would fit comfortably.

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Great helmet that saved my noggin'

  • Familiarity: I've put it through the wringer

I bought this helmet originally so that I wouldn't have keep track of two helmets one for road one for mountain. I have a smaller head and it fits great and looks good. A month ago I went down in a crit and I knocked my head pretty good. The rear part cracked and kept me safe. I usually buy a helmet based on looks and ventilation but it was a good reminder that helmets should protect your head and the POC Octal X did just that. I like it so much I bought a new one.