509 Altitude 2.0 Fresh Greens Helmet

F01009300-130-301
by 509
$449.99
See size chart
Size
Only 4 left in-stock online! In-store inventory varies by location

*Inventory shown online is available for pre-order only*

Reinvented to ride even harder, the second generation of the bestselling 509 Altitude series unleashes a whole new animal. Lighter, stronger, and even more comfortable thanks to a new hand lay-up fiberglass construction, the 509 Altitude 2.0 Helmet excels in any terrain or condition. Includes the Fidlock® magnetic strap buckle for easy one-handed operation, plus customizable features like a removable Pro-Series Breathbox to get you through a full season of extremes.


  • Hand lay-up fiberglass composite construction for stronger, lighterweight, and better fit construction
  • DOT/ECE certified in USA
  • One piece eye port trim
  • XS to 4X sizes available in three shells for optimal fit and minimal weight
  • Upper vents with on/off shutter closure for airflow control
  • Fidlock® chinstrap strap closure for easy in and out
  • Go-Pro® mounting capability, improved design
  • Perfect fit between helmet eyeport and 509 goggles
  • Pro-Series Breathbox for complete protection, removeable for great air flow


Specs

  • Weight: DOT/ECE 1200 grams

509 Helmet Size Chart


HELMET SIZE:

HAT SIZE:
(INCHES)

HEAD CIRCUMFERENCE (INCHES)

HEAD CIRCUMFERENCE (CM)

Extra Small (XS)

6 5/8" - 6 3/4"

21 1/8

54 cm

Small

6 7/8" - 7"

21 7/8

56 cm

Medium

7 1/8" - 7 1/4"

22 5/8

58 cm

Large

7 3/8" - 7 1/2"

23 1/2

60 cm

XL

7 5/8" - 7 3/4"

24 1/4

62 cm

XXL

8"

25

64 cm