You're going to LOVE the fit. Try it on and experience our perfect fit. If you don't love it, send it back in new and unused condition within 30 days for an exchange or full refund*. Risk free.
Not sure about your size? Try on at your local dealer!
*Street Helmets are a tighter fit due to cheekpad compression, however, they do pack out over time/use.
How to Measure
When measuring your head, use a cloth tape. Start it just above your eyebrows and circle it around the thickest point in the rear of your head and then reference the size guide below.
Scroll to the right to see more sizes
| Size | US Hat Size | Inches | Centimeters |
| X-Small | 6 5/8 - 6 3/4 | 20 7/8 - 21 1/8 | 53 - 54 |
| Small | 6 7/8 - 7 | 21 5/8 - 21 7/8 | 55 - 56 |
| Medium | 7 1/8 - 7 1/4 | 22 1/2 - 22 5/8 | 57 - 58 |
| Large | 7 3/8 - 7 1/2 | 23 1/4 - 23 1/2 | 59 - 60 |
| X-Large | 7 5/8 - 7 3/4 | 24 - 24 1/4 | 61 - 62 |
| 2X-Large | 8 | 24 3/4 - 25 | 63 - 64 |
| 3X-Large | 8 3/4 | 25 1/4 - 25 3/4 | 64 - 65 |
| 4X-Large | 9 | 26 - 26 1/4 | 66 - 67 |
| Youth Small | 6 | 18 1/8 - 18 7/8 | 47 - 48 |
| Youth Medium | 6 1/8 - 6 1/4 | 19 1/4 - 19 5/8 | 49 - 50 |
| Youth Large | 6 3/8 - 6 1/2 | 20 - 20 1/2 | 51 - 52 |
Pressure Points
When trying on a helmet, take note of any pressure points on your forehead—a sign that the helmet is too round. Pressure points on the sides of your head indicate a helmet is too oval for the shape of your head. After you buy a new helmet, try wearing it for 30 to 45 minutes to check for pressure points before using it on a ride.
Pressure Points
When trying on a helmet, take note of any pressure points on your forehead—a sign that the helmet is too round. Pressure points on the sides of your head indicate a helmet is too oval for the shape of your head. After you buy a new helmet, try wearing it for 30 to 45 minutes to check for pressure points before using it on a ride.
Overall rating: 4.8125 / 5 from 16 reviews.
Review topics: ["fit","weight","finish","helmet","altitude 2.0"].
"Best helmet I’ve had! Better then fly carbon helmet in my opinion. Light, durable and very comfortable. Can be used for for dirt bike and snowmobiling"
"Great fitting lightweight helmet, perfect for sound pods as well. Best helmet I’ve owned"
"The weight and fit of this helmet is fantastic. I was skeptical of the “cooling” built in to the helmet but it was a warm day in the woods and air flow was better than any helmet I’ve used in the past. The best thing about this helmet, in my opinion, is the magnetic one-handed operating chin strap. I paired this helmet with a set of 509 goggles and they are a perfect pair. Highly recommend this helmet!"
"Fits awesome"
"Been buying helmets for 35 years this is a nicely built helmet fits good love the magnet chin strap .I wish the pads came out easily .if the pads locked in with magnetic pads it would put this helmet at the top"
"Light weight and awesome fit. I am normally a Large but wear a Medium in this lid! great helmet!"
"It looks really clean, nice buffed gloss finish, lightweight, safe."
"This helmet exceeded my expectations after it replaced a helmet almost double the cost. It’s lighter than more expensive carbon helmet, with a large viewing window and great ventilation"
"I have tried every single top of the line helmet on and this 509 carbon fiber 2.0 offroad fit the best and was the lightest. It also breathes really good you can feel the cold air hit your head. Will definitely be buying again!"
"Super light and breathable. Can hardly feel it on your head"
