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LS2 Thunder Carbon Alliance Helmet
COMFORT:
- Highest quality, removable, washable, technical fabric liner wicks moisture to keep you cool —3 D Laser-cut cheek pads for all-day comfort with no hot spots.
- 3mm thick flat racing shield. “A Class” Polycarbonate is optically correct. Includes Pinlock MAX insert for optimal fog-resistance. Pinlock ready shield includes tear-off posts.
- Double D ring strap for secure closure. Emergency Release Cheek Pad System. State-of-the-art multi-density EPS.
- Fully adjustable, multiport, dynamic, flow-through ventilation with channeled EPS to keep you cool.
- Meets or exceeds DOT FMVSS 218, ECE 22.05, and FIM FRHPhe-01.1390g +/-50g.
- 9K Carbon Fiber.
- 3 Shells. *Intermediate Oval.
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Our Price:
$729.98
Sizing Information
The below size chart is provided by LS2 for their helmets
| Size | Head (inches) | Head (cm) |
| XS | 20 7/8 – 21 1/4 | 53-54cm |
| Small | 21 5/8 – 22 | 55-56cm |
| Medium | 22 1/2 – 22 7/8 | 57-58cm |
| Large | 23 1/4 – 23 5/8 | 59-60cm |
| XL | 24 – 24 3/8 | 61-62cm |
| XXL | 24 3/4 – 25 1/4 | 63-64cm |
| XXXL | 25 5/8 – 26 | 65-66cm |
| XXXXL | 26 3/8 – 26 3/4 | 67-68cm |
Measuring your head for helmet fitment is the right place to start, but it is only a guideline. Different shapes of heads might require a slightly smaller or larger helmet in any given model.
A helmet should be as snug as possible without being so tight that it causes discomfort or headache.
Need help choosing the right shape and size helmet for your own noggin?
Learn about the LidPicker!
