Adjustment Dial GIRO ROC LOC AIR ash black - helmet retention replacement part

GIRO ROC LOC AIR adjustment dial in ash black is a replacement retention part designed for helmets that use the ROC LOC AIR fit system. It restores the tool-free, micro-adjustable fit mechanism that lets users fine-tune helmet circumference and maintain stable positioning during cycling, commuting or recreational riding. The part is intended to integrate with compatible GIRO shells and retention arms to reproduce the original fit and function of the ROC LOC AIR system.

Advantages

The replacement dial provides precise, incremental adjustments so the helmet can be tightened or loosened quickly without tools. Its compact design and ash black finish match common GIRO aesthetics while minimizing added weight. By replacing a worn or damaged dial you preserve the retention system’s ability to hold the helmet securely and consistently, supporting both comfort and safety during use.

Suitable for

• Reinstating fit on GIRO helmets equipped with the ROC LOC AIR retention system
• Repairing helmets after loss or damage of the original adjustment dial
• Maintaining precise fit for cycling, urban commuting and leisure riding

Key specifications

• Fit system type: ROC LOC AIR compatible retention dial
• Colour: ash black
• Adjustment: tool-free, micro-increment rotation
• Material: durable polymer construction designed for repeated use
• Compatibility: designed for use with helmets that accept ROC LOC AIR replacement parts

How to use

Install the dial by aligning it with the retention cradle and engaging the attachment points according to the helmet manufacturer’s guidance. Once fitted, rotate the dial clockwise to tighten and counterclockwise to loosen until the helmet sits comfortably and securely on the head. Check that the retention arms and contact points are correctly seated and that straps are adjusted to keep the helmet stable without excessive movement.

Usage recommendations

Inspect the replacement dial and the surrounding retention components periodically for wear or damage and replace any compromised parts. Follow GIRO’s compatibility information when sourcing replacement components and perform a fit check before each ride to ensure the helmet provides correct retention and alignment.