The SIERRA helmet – Your safe companion for Street & Adventure

Get ready for style, safety, comfort, and innovative technology – the O’NEAL SIERRA helmet combines them all in a sleek overall design. With this helmet you’re free to focus on the road and know that the SIERRA will support you.

High-end is the perfect word to describe the O’NEAL SIERRA: Delivering top performance in design, comfort, and safety, this O’NEAL helmet is up to any challenge.
• Optimal ventilation & cooling
• Microlock closure
• Pinlock® 30 anti-fog lens included
These and many other features distinguish this Street & Adventure helmet.

Be 50 Years Faster and set new standards with O’NEAL

O’NEAL has been an experienced partner to motorsport athletes from all over the world for more than 50 years. With equipment that meets the highest requirements, we set new industry standards to take you right to the front of the pack.

ABS shell: The shell of this O'NEAL helmet is constructed out of robust and lightweight ABS.

Ventilation & cooling: Multiple air vents ensure optimal ventilation and cooling – to make sure you feel comfortable for long periods on the bike in any climate.

Matte finish for a perfect look: With the modern, stylish matte finish of your O’NEAL helmet, the colors & design are left looking vibrant – and extra durable.

Durable design: Multi-colored graphics lend this O’NEAL helmet its sporty appearance – and with a long-lasting finish, it's going to look amazing for a long time.

Removable liner: The sweat absorbent padded comfort liner is removable and washable – for extra easy maintenance.

Microlock fastener: With a Microlock fastener (ratchet fastener), this helmet is particularly comfortable and easy to adjust on the go.

Standardized safety: This O’NEAL helmet meets the new ECE 22.06 test standards for increased safety for protective helmets for powered two-wheelers.

Pinlock® included: this O’NEAL helmet comes with a Pinlock® 30 fog resistant insert lens which you can easily mount yourself.

Integrated sun visor: This O’NEAL helmet comes with a clear visor. A secondary integrated sun visor provides improved visibility and protects against bright lights.

Bluetooth ready: With internal speaker cavities and rubber hoop at the back, this helmet can easily be equipped with a Bluetooth unit. (Bluetooth unit not included)

O'Neal - Sierra R Helmets