HJC Adwatt Aero Time Trial Bike Helmet - Black

The Adwatt was designed through enhanced wind tunnel testing to improve its drag force performance...

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Product Information

Full details

The HJC Adwatt Aero Time Trial Bike Helmet is engineered for competitive cyclists and time trialists seeking professional-grade aerodynamic performance without compromising on thermal management. Developed alongside UCI World Tour teams, this helmet excels at reducing drag while maintaining excellent internal airflow; however, its specialized aerodynamic shape makes it less suited for casual, upright riding or gravel cycling disciplines.

All features

Age Group	adult
Colour	Black
Gender	Unisex
Model Part Number	8804269650882
Brand	HJC

Extended Product Information

FAQs

Can I wear this helmet without the visor?

Yes, the HJC Adwatt is specifically engineered to be efficient and aerodynamic whether you choose to use the visor or not.

What does the package include?

The package includes the HJC Adwatt helmet, the mirror shield, and a premium storage case for travel.

How do I clean the mirror shield?

Use a soft microfiber cloth and a mild lens cleaner or water. Avoid abrasive materials that could scratch the mirror coating.

Is this helmet UCI legal?

Yes, it was used by the Lotto Soudal team during their UCI World Tour events and successful Hour Record attempt.

How much does the helmet weigh?

It weighs 260g without the shield and 320g with the shield attached.

Are the pads replaceable?

Yes, the internal X-static fabric pads can be removed for cleaning or replacement.

Troubleshooting

Visor fogging during the ride

Ensure the front air vents are not obstructed by headwear and that you are moving at a sufficient speed to initiate the Venturi airflow effect.

Helmet shifting during position changes

Re-adjust the rear retention system and ensure the wide dividers are pulled snug beneath the earlobes for a secure fit.

Pros and Cons

Pros

Race-proven aerodynamics used in UCI Hour Record attempts
Excellent ventilation for an aero-specific helmet
Versatile performance with or without the included shield
Feather-light construction for improved comfort during long races
Includes a premium storage case for transport protection

Cons

Specific aerodynamic profile may feel restrictive compared to road helmets
Visor requires careful handling to prevent scratching
Design is optimized for a specific tuck position

Setup, Compatibility & Care

To ensure peak performance, verify that the helmet sits level on your forehead. Use the adjustable wide divider to position the straps comfortably around your ears without causing chafing. For the mirror shield, ensure the magnetic or attachment points are clean of debris before snapping it into place to avoid micro-scratches. After use, remove the X-static padding to hand wash with mild soap and cool water, then air dry completely to preserve the antimicrobial properties. When not in use, always store the helmet inside the provided premium case to protect the shell from impacts and to prevent the visor coating from wearing down due to surface contact.