ONeal Defender 2.0 MTB Helmet
Getting ready for your next day on the track? Take the O’NEAL Defender MTB helmet along for the ride. This lightweight helmet is perfect for Enduro & All Mountain and offers strong features for all-around support.
Key Features:
- Lightweight All Mountain / Enduro helmet with 2 shell sizes
- O'Neal Fidlock® magnetic buckle for easy, single-handed fastening and release
- Weight: 380g (±25g)
- Size adjustment with new micro-adjust 1 Hand Retention System including reflective sticker
- Easy strap adjustment for perfect individual fit
- Sweat-absorbing and skin-friendly lining (9mm thickness for size S/M; 6mm for size L/XL), detachable and washable (hand-wash)
- Oversized vents for maximum airflow and cooling
- Adjustable and detachable visor
- Exceeds EN1078 safety standard for bicycle helmets
The Defender is more than just a sleek design highlight. With strong features and functions, it will quickly become your favourite helmet.
Occasionally, without notice, manufacturers change product design and/or specifications.
O'Neal Helmet Size Guide
How to measure
To find the circumference of your head, place a tape measure in the centre of your forehead, wrap it around above your ears and around the back of your head. If there's a slight difference between two different sizes, always go for the tighter size.
Full Face Helmets
Adult sizing
Size |
XS |
S |
M |
L |
XL |
XXL |
(cm) |
53/54 |
55/56 |
57/58 |
59/60 |
61/62 |
63/64 |
Youth
Size |
M |
L |
(cm) |
48/50 |
51/52 |
Open Face Helmets
Thunderball
|
Adults |
|
Youth |
Size |
XXS - S |
M - XL |
XXS - S |
(cm) |
52-57 |
57-61 |
52-56 |
Defender – Adults
size |
S - M |
L - XL |
(cm) |
54-58 |
58-61 |
Pike – Adults
size |
S / M |
L / XL |
(cm) |
55-58 |
58-61 |
Q RL – Adults
size |
XS - M |
L - XL |
(cm) |
53-58 |
58-63 |
Orbiter – Adults
size |
XS - S |
M - L |
XL - XXL |
(cm) |
53-56 |
57-60 |
61-64 |
Dirt Lid
|
Adults |
|
Youth |
|
|
size |
M - L |
L - XL |
S |
M |
L |
(cm) |
55-59 |
58-61 |
47-48 |
49-50 |
51-52 |
Trailfinder – Adults
size |
S - M |
L - XL |
(cm) |
54-58 |
59-63 |
Rooky – Teenagers
size |
XXS |
(cm) |
51-56 |
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No longer available
Sorry you missed the ONeal Defender 2.0 MTB Helmet.
This product is no longer available.