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.
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We have a very easy 30-day Return Policy! Please submit a Customer Support Ticket to get a Return Authorization so we can process your return or exchange.
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All of the great features from the 509 Altitude Offroad Helmet with the addition of MIPS and Fidlock® technology. Providing riders with more confidence and safety, the addition of MIPS and Fidlock® technology make all of the difference. Proving you don't have to sacrifice performance, fit, or style for safety. For a ride like no other the Altitude Offroad Helmet with MIPS and Fidlock® is an obvious choice.
Key Features
- Comes standard with universal camera mount
- Comes standard with Fidlock® easy-open magnetic strap clasp
- Innovative aerodynamic channels & 8 intake/exhaust vents
- 8 sizes across 3 outer shell molds ensure excellent fit
- Meets and exceeds DOT & ECE 2205 safety certification standards
- Revolutionary neck brace ready shell profile
- Dual density, interlocking eps
- Removable/Washable premium liner and cheek pads
- Youth shell starts at 1260 grams
- Specially designed expanded polyurethane chin insert
- Class leading eye port opening dimensions, which provide optimum peripheral vision
- Perfect 509 goggle fit
- One-piece eye port trim
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Size Guide
Scroll to the right to see more sizes
Not sure about your size? Try on at your local dealer!
| 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 |