Product Details
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.
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