The CYRIL THUNDER is a modular motorcycle helmet for riders who value the convenience of a flip-up chin bar at stops. A clear outer shield and built-in sun visor handle different daylight conditions, while a removable, washable liner makes regular upkeep straightforward. Choose a solid finish or Flowing Light graphics.
Safety Standards
Meets U.S. DOT FMVSS No. 218 safety requirements for motorcycle helmets. Choose the correct size and fasten the retention system before riding.
Design & Construction
THUNDER combines a flip-up chin bar with a clear outer shield and a separate internal sun visor. The modular shell has a broad visor opening, and the removable, washable liner allows you to clean the interior between rides. Close and secure the chin bar before riding.
Care Instructions
Clean with a soft cloth and mild soap only. Avoid gasoline, alcohol, solvents, harsh chemicals, or high-pressure water. Keep products dry after cleaning and store them in a cool, dry place away from direct sunlight or extreme heat. Replace or stop using any item after major impact, damage, or abnormal wear.
Returns & Exchanges
Quality-related returns are accepted within 15 days of delivery. Non-defective items may be exchanged within 7 days only. Items must be unused and returned in original packaging.
Warranty Coverage
CYRIL products include limited warranty support from the original purchase date: helmets are covered for 2 years, while accessories and electronic components are covered for 1 year. This warranty covers approved quality-related issues only and excludes impact damage, normal wear, misuse, improper installation, unauthorized repair, chemical exposure, or products purchased from unauthorized channels.
THUNDER Dual Visor Modular Motorcycle Helmet
Regular price
$120.99 USD
Regular priceSale price
$120.99 USD
Unit price/ per
THUNDER Dual Visor Modular Motorcycle Helmet
$120.99
Features & Details
500,000+Units Sold500K+ Sold
4.8 / 5Customer Rating4.8 Rated
DOT FMVSS 218 CertifiedDOT Certified
Cyril Official StoreOfficial Store
White Gloss
Black Matt
Flowing Light 01 Gloss
Flowing Light 02 Gloss
Flowing Light 03 Gloss
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Cyril Helmets / Modular
THUNDER
Flip-up convenience for the stops along the way.
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Design
Flip-up chin bar
Visors
Clear shield + sun visor
Liner
Removable and washable
Safety standard
DOT FMVSS No. 218
Design details
Get to know the modular design.
Convenience when you pull over.
Flip-up chin bar
Lift the chin bar while stopped to speak with a passenger or take a break. Close and secure it before you set off again.
Broad visor opening
The visor opening frames your view of the road within the modular shell. The clear outer shield sits in front of your face.
Two shields for different light.
Clear outer shield
The outer shield helps keep wind and insects away from your face. It works with a separate sun visor built into the helmet.
Internal sun visor
Lower the sun visor in bright daylight and raise it in shade or fading light, without swapping out the clear outer shield.
Simple upkeep, your choice of finish.
Washable liner
Remove the liner for cleaning between rides, following the care instructions. Let it dry fully before putting it back into the helmet.
Solid colors and graphics
Choose a simple white or black finish, or the flowing lines of the Flowing Light graphics. Each keeps the same modular silhouette.
Fit guide
Find your size.
Measure around the widest part of your head, just above the eyebrows and ears. Keep the tape level, then use the chart.
Size
Centimeters
Inches
S
54–55 cm
21.25–21.65
M
56–57 cm
22.04–22.44
L
58–59 cm
22.83–23.22
XL
60–61 cm
23.62–24.01
XXL
61–62 cm
24.01–24.40
Packaging
Thoughtfully packed.
Your helmet, carefully protected in a biodegradable paper box.
CYRIL quality, down to the box.
What's included
1 Helmet
User manual
Protective bag
Basic accessories
Packaging details
Branded kraft paper box
Protective inner packaging
Ready for storage or gifting
Secure transport packaging
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