Advice & Guides Advice: How to make sure your helmet fits correctly
You'd be surprised how many riders wear a helmet that's too big for them. Here's how to tell if a lid really fits you...
1 Feb 2022
Sorry this product is no longer available. You might like these instead...
-16%
Verified Customer Reviews for O'Neal Sierra
Cool lid
18 Apr 2024 by Chris H
Good fit well vented and comfortable.
Fairly quiet inside,no lifting at speed with the peak.
Good value for money.
Style: Flat V.23 Black
Helpful?
Description
Product Specification
Variants
Manufacturer
O'Neal Sierra - Flat V.23 Black
- High-quality ABS shell construction ensures durability
- Optimal ventilation and cooling provided by multiple air vents
- Secure closure facilitated by Microlock closure system
- Removable, sweat-absorbing, and washable padded comfort liner enhances comfort
- Bluetooth-ready with internal speaker cavities and a rubber hoop at the back of the helmet (Bluetooth unit not included)
- Includes Pinlock® 30 fog-resistant insert lens (not mounted)
- Features a clear visor with a secondary integrated sun visor
- Meets new ECE 22.06 test standards for increased safety
Discover excellence with the O'Neal SIERRA Helmet, hailed as a top choice by "MOTORRAD." Featuring high-quality ABS shell construction, optimal ventilation, and Microlock closure, it offers durability and secure fit. With Bluetooth readiness, a removable padded liner, and included Pinlock® 30 fog-resistant lens, it combines comfort and safety seamlessly, meeting new ECE 22.06 standards.
Advice & inspiration
Advice & Guides 
