Product Details
Item Condition: This item has been used for test purposes and may show slight signs of use. There may be minor cosmetic damage such as scuffs, scratches, stains, chips or dings. The original packaging may or may not be present. The outer shell has scuff and scratch marks around the left, right, and top side. MFG: 03/2023
509 Altitude 2.0 Helmet
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.
Features:
- 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, removable for great air flow
Product Style | RevZilla Item # | Store Sku | MFR. Product # | Availability |
---|---|---|---|---|
Product Style XL / Red/Black | RevZilla Item #10539586 | Store Sku | MFR. Product #F01009400-150-104 | AvailabilityOnly 1 Left: Ships next business day |
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


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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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