O'neal

Sonus Slick Gray/Neon Yellow Helmet

The O’Neal Sonus Slick Gray/Neon Yellow helmet is designed for riders who need full head and face protection, stable fit, and comfort during intense MTB riding. It is a full-face model intended for downhill, enduro, freeride, and bike park use.

The shell is made of ABS material, providing solid durability and resistance for regular use in demanding terrain. Multiple ventilation openings support effective airflow and cooling, which becomes especially important during longer descents, warm-weather rides, and more intense sessions.

One of the key comfort features is the ultra-plush removable inner liner, which absorbs sweat and can be washed. This makes the helmet practical for riders who train regularly in dust, mud, and changing weather conditions. Daily use is also improved by the O’Neal Fidlock® magnetic buckle, allowing quick and secure one-handed fastening and release, even with gloves on.

The Sonus Slick also includes useful gravity-oriented details. The height-adjustable visor makes it easier to adapt the setup to trail conditions and goggle position, while the rear shell design allows goggles to rest securely on the back of the helmet. The helmet is also compatible with Airflaps™, and optional plastic break-away screws are available to support added safety in a crash.

This is a strong option for riders looking for a full-face MTB helmet with EN1078 certification and ASTM downhill compliance, while also expecting comfort, practical removable padding, and rider-focused functionality for regular off-road use.

Key benefits

• Full-face MTB design for enduro, downhill, freeride, and bike park riding
• ABS shell for durability and dependable protection
• Multiple ventilation openings for better airflow and cooling
• O’Neal Fidlock® magnetic buckle for fast one-handed use
• 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
• Gray/Neon Yellow colorway for a more dynamic and visible look

Who is this product for

The O’Neal Sonus Slick Gray/Neon Yellow is a good choice for:

• riders focused on enduro, downhill, freeride, and bike park riding
• cyclists who want a full-face MTB helmet
• riders looking for a helmet with a practical magnetic buckle
• users who ride with goggles and want good helmet-goggle compatibility
• riders who want to combine strong protection with a bold, visible colorway

Technical features / specification

• Model: O’Neal Sonus Slick
• Color: Gray/Neon Yellow
• 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 Gray/Neon Yellow 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.