Skip to content

509 Altitude 2.0 Carbon Fiber 3K Helmet (ECE)

Save 2%
Original price $599.99
Current price $587.99

All new design, with the same lineage of our Altitude Helmet. Built for riders that demand Comfort, Control, and Confidence that ride in all conditions. Hand Lay-up 3K Carbon Fiber construction results in a stronger, lighterweight, and Certified Helmet. Certified Protection ECE and DOT/ECE styles also available. Perfect fit with our 509 goggles. Fidlock chinstrap for easy in and out. Go-Pro® mounting capability. Improved design. Improved fit, lighterweight construction. Better fit and finish.

FEATURES
• Hand lay-up carbon fiber composite construction
• 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, removable for optimal air flow
• Weight: ECE helmet as low as 1070 grams, and DOT/ECE 1150 grams

To ensure that the proper sized item arrives, we suggest customers follow brand specific sizing guides. Google and other search engines provide a wealth of information in regards to specific brands sizing. Just because you currently wear a certain size, a new brand may have slightly different fitment specifications. Please reach out to us if you have any questions regarding the fitment of the brands we carry and we can provide you with more accurate sizing charts on a brand-by-brand basis. 1-877-745-4232


As well please use SIZING CHART here.


In order for a helmet to protect properly and be the most comfortable, it must be sized to your head correctly.


The best way to check sizing is to put the helmet on and see that the helmet feels snug equally all around your head. The helmet should not feel too tight or too loose at any particular point around your head.


If you can’t put it on, at all, then that’s obviously too tight. If you can get it on, but it hurts where it presses against your head, that’s also too tight. If it’s snug all around, too snug to chew gum, that’s about right. Don’t forget about that 15 percent to 20 percent break-in that will occur.