509,Lightweight Helmet, 509 Altitude 2.0 Carbon Fiber Helmet, F01003800
509,Comfortable helmet, 509 Altitude 2.0 Carbon Fiber Helmet, F01003800
509,Safety certified Helmet, 509 Altitude 2.0 Carbon Fiber Helmet, F01003800
509,Carbon fiber shell helmet, 509 Altitude 2.0 Carbon Fiber Helmet, F01003800
509, Removable liner Helmet, 509 Altitude 2.0 Carbon Fiber Helmet, F01003800
509, Aerodynamic Helmet, 509 Altitude 2.0 Carbon Fiber Helmet, F01003800

509 Altitude 2.0 Carbon Fiber Helmet

Regular price$429.95
Shipping calculated at checkout.

  • Low stock - 1 item left
  • Inventory on the way

Introducing 509's Altitude 2.0 Carbon Fiber Helmet,  Redesigned for a more extreme ride, the 509 Altitude 2.0 Carbon Fiber Helmet is the newest edition of the best-selling Altitude series. It boasts a lightweight, strong, and sleek hand lay-up carbon composite construction. With features like the Fidlock® magnetic strap buckle for convenient one-handed operation, an integrated universal camera mount, and adjustable airflow, this helmet is perfect for aggressive riders.


• 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 eye port and 509 goggles
• Pro-Series Breathbox for complete protection, removable for optimal airflow
• 509 helmet bag included

• Starting Weight: DOT/ECE 1150 grams

California Prop 65

Please click here to view our shipping information.

To view our return policy please click here.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.



First time buying something from them and I had some questions about my order. The reply was surprisingly fast. Not only answered my questions but took very good care of me. The customer comes first at this place and I look forward to my next purchase. Thank you for the excellent customer service!


Had a great experience with the customer service here. Needed to get something quickly, which was no small ask, and the took great care of me, treated me very well and made me feel important at the same time. I will continue to get everything I need from these guys in the future.

Google Reviews

Was very impressed! Blown Motor is the place to go!! They have a wide range of men and women clothing! I needed something super quick and they helped me find what I needed and the customer service is amazing. Thanks Blown Motor for helping me get on my way on such a short notice!!

Google Reviews

This company is always great to work with and has anything you need in stock. Communication is amazing and gives realistic time frames and updates.

Google Reviews

Blown away by service, fast shipping, and returns. These guys are amazing.


The staff was very knowledgeable and was able to answer my questions. Items were in stock. I received my items quickly.

Google Reviews

These guys are awesome! They are super knowledgeable and very helpful.

Google Reviews

Awesome website, customer service was super helpful and had all the information that I needed.

Google Reviews

Great experience, ordered product and received it fast!

Google Reviews