O'neal

Sonus Slick Black/Gray Helmet

The O’Neal Sonus Slick helmet is built for riders who need full head and face protection, stable fit, and comfort during intense MTB riding. It is a full-face model that suits the needs of riders focused on downhill, enduro, freeride, and bike park riding.

The shell is made of ABS material, which supports durability and solid day-to-day resistance in off-road riding conditions. A large number of ventilation openings helps provide optimal airflow and cooling, which is especially important during long descents, transfer climbs, and warmer weather riding.

Comfort is also supported by the ultra-plush removable inner liner, which absorbs sweat and can be washed. This is a practical solution for riders who train regularly and ride in dust, mud, and changing weather conditions. Another important feature is the O’Neal Fidlock® magnetic buckle, designed for fast and convenient one-handed fastening and release, even while wearing gloves.

The Sonus Slick also includes features that matter in gravity and trail use. The height-adjustable visor allows better setup depending on trail conditions and goggle position, while the rear shell shape is designed so that goggles can rest securely on the back of the helmet. The helmet is also compatible with Airflaps™, and optional plastic break-away screws are available to further support safety in a crash situation.

This model is a strong option for riders looking for a full-face MTB helmet with EN1078 certification and ASTM downhill compliance, while still expecting comfort, practical removable padding, and user-friendly details for regular riding.

Key benefits

• Full-face MTB design for enduro, downhill, freeride, and bike park use
• ABS shell for durability and reliable protection
• Multiple ventilation openings for better cooling and airflow
• O’Neal Fidlock® magnetic buckle for fast one-handed operation
• Removable and washable inner liner that absorbs sweat
• Adjustable visor with optional break-away plastic screws
• Airflaps™ compatibility
• Secure goggle rest position on the rear shell
• Complies with EN1078 and ASTM downhill standard

Who is this product for

The O’Neal Sonus Slick is suitable for:

• riders focused on enduro, downhill, freeride, and bike park riding
• cyclists moving from an open MTB helmet to a full-face helmet
• riders looking for a helmet with a practical magnetic buckle
• users who ride with goggles and want good helmet-goggle integration
• riders who prioritize extended protection for the head and face in rough terrain

Technical features / specification

• Model: O’Neal Sonus Slick
• Color: Black/Gray
• Type: full-face bicycle helmet / MTB
• Shell: ABS
• Ventilation: multiple ventilation openings
• Buckle: O’Neal Fidlock® magnetic buckle
• Inner padding: ultra-plush, removable, sweat-absorbing, washable
• Visor: height-adjustable sun visor
• Compatibility: Airflaps™
• Additional safety option: optional plastic break-away screws
• Goggle support: goggles can rest securely on the rear shell
• Safety standards: EN1078, ASTM for downhill use

Additional details provided in the source materials:

• shell: 76% ABS, 24% EPS
• inner material: 85% polyester, 15% spandex
• padding fill: 100% polyurethane foam
• weight: 1100 g (±50 g)
• sizes: XS–XXL

FAQ

Is the O’Neal Sonus Slick suitable for enduro and downhill?
Yes. It is a full-face helmet designed for enduro, downhill, freeride, and bike park riding.

Does it have an easy-to-use buckle system?
Yes. It uses a Fidlock® magnetic buckle for quick one-handed fastening and release.

Can the inner liner be removed and cleaned?
Yes. The liner is removable, washable, and sweat-absorbing.

Does this helmet work well with goggles?
Yes. The helmet is shaped so that goggles can rest securely on the rear shell, and it is also compatible with Airflaps™.

Is the visor adjustable?
Yes. The helmet includes a height-adjustable visor.

What safety standards does it meet?
The helmet complies with EN1078 for bicycle helmets and ASTM for downhill use.