ONeal Thunderball 2.0 Helmet
- ShowProduct Information Key Features: Lightweight ABS shellWeight 980 g (±50 g)Sweat-absorbing and removable, washable inner... read more
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- Lightweight ABS shell
- Weight 980 g (±50 g)
- Sweat-absorbing and removable, washable inner liner
- Height adjustable visor
- Fidlock® magnetic buckle for easy, single-handed fastening and release
- Durable multi-colored clear-coated graphics
- Exceeds EN1078 safety standard for bicycle Helmets and fulfills ASTM Downhill standard
Occasionally, without notice, manufacturers change product design and/or specifications.
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Oneal Size Guide
Oneal Helmet Size Guide
This measurement is the total circumference of your head. With tape level, measure the widest point of your head, approximately 1 inch above your eyebrows. Please note, that your helmet should fit snugly and not be able to move easily up and down or side to side when the chin strap is fastened. If this occurs, please try a smaller size.
Open Face Helmets
|Size||XXS – S||M – XL||XXS – S|
|(cm)||52 – 56||54 – 60||52 – 56|
Defender – Adults
|Size||S – M||L – XL|
|(cm)||56 – 59||59 – 61|
Pike - Adults
|(cm)||55 – 58||58 – 61|
Q RL – Adults
|Size||XS – M||L – XL|
|(cm)||53 – 58||58 – 63|
Orbiter II – Adults
|Size||XS – S||M – L||XL – XXL|
|(cm)||53 – 56||57 – 60||61 – 64|
Dirt Lid – Adults
|Size||M – L||L – XL||S||M||L|
|(cm)||56 – 58||58 – 60||47 – 48||49 – 50||51 – 52|
Read our clothing size guide for more information on sizing.
Please note, all size information is provided as a guide - if you're unsure or need any further assistance you can call us on 01792 799508 ... we're happy to help!
Mountain Bike Helmet Guide
Delivery & Guarantee
UK Delivery Information
We are committed to offering fast and free delivery, whether you're ordering bikes, accessories or clothing. Our standard delivery service is FREE in the UK, regardless of the size and on all orders over £20.
Please note that bulky products and bikes shipped to outlying UK regions are excluded from free shipping.
Please note that Pre-Order dates can sometimes change due to updated stock information.
Click here for more UK and international delivery information.
Returns & Warranty
It's easy to return a product with our 365 day, hassle free returns.
We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).
Please note: For hygiene reasons, we cannot accept returns of facemasks, undershorts or underwear if the item has been removed/unsealed from its original packaging.
If your item develops a fault or arrives damaged, please contact us first so we can resolve the issue for you as quickly as possible.
For more information please visit our Returns & Warranty page.