SKU N/A Categories ,

509 Altitude 2.0 Hi-Flow Helmet

$299.95$309.95

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…

Clear

Description

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.

 

 

509 Helmet Sizing

CONVERT TO INCHES

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

  • 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.

Additional information

Color

Black Ops, Cyan/Blue, Storm Chaser

Size

XS, SM, MD, LG, XL, 2XL, 3XL, 4XL

Reviews

There are no reviews yet.

Be the first to review “509 Altitude 2.0 Hi-Flow Helmet”

Your email address will not be published. Required fields are marked *

LOWEST PRICE, GUARANTEED

Found it for less?
U-Bike will match any advertised price on new merchandise available through another authorized U.S. dealer.

SELF-SERVICE RETURNS

Doesn't fit? Don't love it?
Return any unused item within 90 days for a full refund.