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509

509 Altitude 2.0 Hi-Flow Helmet (2XL)

Item: P861771
4 Read 4 Reviews 3 Q&As Write a Review

Reinvented to ride even harder, the second generation of the bestselling 509 Altitude series unleashes a whole new animal. For those who run at redlin… Read More

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509 Snow Helmets Review

Product Details

Helmet shape is Intermediate Oval

Shape: Intermediate Oval

What's this?

509 Altitude 2.0 Hi-Flow Helmet

Reinvented to ride even harder, the second generation of the bestselling 509 Altitude series unleashes a whole new animal. For those who run at redline, the new 509 Altitude 2.0 Hi-Flow Helmet maximizes airflow with open upper and rear vents plus a 40% larger chinbar intake. Everything else is what you’d expect from one of the world’s bestsellers, including a new hand lay-up fiberglass construction that makes this helmet lighter, stronger, and even more comfortable.

Features:

  • Hand lay-up fiberglass composite construction
  • XS to 4X sizes available in three shells for optimal fit and minimal weight
  • Upper vents for optimal airflow
  • Go-Pro mounting capability, improved design
  • Fidlock chinstrap strap closure for easy in and out
  • Perfect fit between helmet eyeport and 509 goggles
  • Pro-Series Breathbox for complete protection, removable for optimal air flow
Product Style RevZilla Item # Store Sku MFR. Product # Availability
Product Style Black Ops / XS RevZilla Item #1833815 Store Sku MFR. Product #F01009700-110-051 AvailabilityCloseout: This product is no longer available
Product Style Black Ops / SM RevZilla Item #1833816 Store Sku MFR. Product #F01009700-120-051 AvailabilityCloseout: This product is no longer available
Product Style Black Ops / 2XL RevZilla Item #1833820 Store Sku MFR. Product #F01009700-160-051 AvailabilityCloseout: This product is no longer available
Product Style Black Ops / 3XL RevZilla Item #1833821 Store Sku MFR. Product #F01009700-170-051 AvailabilityCloseout: This product is no longer available
Product Style Black Ops / 4XL RevZilla Item #1833822 Store Sku MFR. Product #F01009700-180-051 AvailabilityCloseout: This product is no longer available
Product Style XS / Cyan/Blue RevZilla Item #1833823 Store Sku MFR. Product #F01009700-110-201 AvailabilityCloseout: This product is no longer available
Product Style SM / Cyan/Blue RevZilla Item #1833824 Store Sku MFR. Product #F01009700-120-201 AvailabilityCloseout: This product is no longer available
Product Style XL / Cyan/Blue RevZilla Item #1833827 Store Sku MFR. Product #F01009700-150-201 AvailabilityCloseout: This product is no longer available
Product Style 2XL / Cyan/Blue RevZilla Item #1833828 Store Sku MFR. Product #F01009700-160-201 AvailabilityCloseout: This product is no longer available
Product Style XS / Storm Chaser RevZilla Item #1833829 Store Sku MFR. Product #F01009700-110-801 AvailabilityCloseout: This product is no longer available
Product Style SM / Storm Chaser RevZilla Item #1833830 Store Sku MFR. Product #F01009700-120-801 AvailabilityCloseout: This product is no longer available
Product Style MD / Storm Chaser RevZilla Item #1833831 Store Sku MFR. Product #F01009700-130-801 AvailabilityCloseout: This product is no longer available
Product Style LG / Storm Chaser RevZilla Item #1833832 Store Sku MFR. Product #F01009700-140-801 AvailabilityCloseout: This product is no longer available
Product Style XL / Storm Chaser RevZilla Item #1833833 Store Sku MFR. Product #F01009700-150-801 AvailabilityCloseout: This product is no longer available
Product Style 2XL / Storm Chaser RevZilla Item #1833834 Store Sku MFR. Product #F01009700-160-801 AvailabilityOnly 1 Left: Ships within 24 hours
Product Style 3XL / Storm Chaser RevZilla Item #1833835 Store Sku MFR. Product #F01009700-170-801 AvailabilityCloseout: This product is no longer available
Product Style 4XL / Storm Chaser RevZilla Item #1833836 Store Sku MFR. Product #F01009700-180-801 AvailabilityCloseout: This product is no longer available

509 Helmet Sizing

Size Head (cm)
XS 53-54
SM 55-56
MD 57-58
LG 59-60
XL 61-62
2XL 63-64
3XL 64-65
4XL 66-67

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How to Measure

  • H Head
    Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.
Product Description
Part Numbers
Sizing & Fit
4 Customer Reviews for All Models
4 5/5
3 Questions & 0 Answers for All Models
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