Product Details
Size Guide
XS | S | SM | ML | L/XL | XL/XXL |
---|---|---|---|---|---|
54-54.9cm | 55-55.9cm | 56-57.4cm | 57.5-59.9cm | 60-61.9cm | 62-63cm |
Ruroc AT4.0 Carbon Ultramarine Helmet
The iconic Ultramarine colourway makes a vibrant return to the AT4.0 motorcycle helmets, now available at Moto Central, your Official Ruroc Sizing Station. This stunning AT4.0 Ultramarine full face motorbike helmet features a vibrant sapphire blue coat with a striking metallic gloss finish, a departure from its previous matte iteration. The reborn Ultramarine showcases its dazzling colours on the newly refined and re-engineered AT4.0 shell. At Moto Central, we are proud to offer this eye-catching Ultramarine design and, as your dedicated Ruroc partner, we can order any colour and size from the extensive AT4.0 range to meet your exact preferences. Simply let us know your desired specifications, and we'll arrange it for you.
The AT4.0 motorcycle helmet boasts brand-new tailor-made cheek pads and a headliner, along with the latest ECE 22.06 safety rating, adjustable open and close top and front vents, and sound-dampening ear inserts. The new cheek pads are crafted with a soft, sweat-wicking fabric and packed with multiple layers of multi-density foam for exceptional comfort, smart contouring, and a secure fit. Ruroc's innovative RHEON™ headliners are now integrated into the AT4.0, featuring reactive polymers that effectively reduce linear and rotational impact forces in the event of a crash. The adjustable open and close top and front vents provide adaptive climate control for both hot and cold rides, ensuring optimal comfort. With a refined shell design, the AT4.0 Ultramarine beautifully displays its vibrant paint across an increased surface area, thanks to the removal of the previous centre and rear top vents. This redesign, coupled with the new sound-dampening ear inserts, results in significantly quieter acoustics. Safety remains Ruroc's top priority, and we are proud to announce that our AT4.0 helmets are among the first motorcycle helmets to achieve the impressive ECE 22.06 safety rating.
While the AT4.0 is Ruroc's quietest motorcycle helmet ever, you can further enhance its functionality with the optional Shockwave™ Bluetooth insert (sold separately). This seamlessly integrates into the rear of the helmet, delivering high-quality audio with rich bass for up to 8 hours of playtime via a convenient USB-C rechargeable battery. Customise your AT4.0 Ultramarine with our wide range of helmet visors, easily interchangeable thanks to the quick-release thumbscrews. The helmet comes equipped with a clear visor for road use and includes a secondary tinted visor for track days. All our visors are also compatible with Pinlock® inserts (available separately) for effective anti-fog protection. Visit Moto Central today, your Official Ruroc Sizing Station, to experience the vibrant Ruroc AT4.0 Ultramarine and explore the vast array of Ruroc helmets and accessories available. Remember, we can order any colour and size to perfectly suit your individual style and needs.
Key Features:
- ECE 22.06 & DOT FMVSS 218 certified
- Ultra-tough Carbon fibre shell construction
- Features RHEON impact technology for superior safety
- Multi-Density EPS for targeted impact protection
- Premium headliner and multi-density cheek-pads for optimised comfort and fit
- Edge-to-edge coverless visor with an ultra-wide 215-degree field of view
- Simple and secure Fidlock chinstrap
- Compatible with the integrated Shockwave Bluetooth communication system
Reviews & Questions

About Ruroc
Ruroc is a British helmet brand recognised for blending bold design with advanced safety technology. After making its mark in snow sports, the brand entered the motorcycle world with its Atlas range—helmets known for aggressive styling, aerodynamic performance, and high-spec construction.
Designed in the UK, Ruroc helmets offer a unique combination of style and protection. With each new model, they continue to refine comfort, noise reduction, and overall performance—making them a standout choice for riders looking for something different.