Description
C91 Modular Helmet – Nepos – MC21 – 5XL
The HJC C91 Nepos Modular Helmet features an advanced polycarbonate composite shell designed for durability and lightweight comfort, providing a superior fit thanks to cutting-edge CAD technology. This helmet includes an adjustable chinbar for customized protection and easy conversion between full-face and open-face modes, making it ideal for a range of riding styles and conditions. The helmet’s Advanced Channeling Ventilation System (ACS) ensures optimal airflow by flushing heat and humidity from front to back, keeping riders cool and comfortable during extended rides. The Pinlock®-prepared HJ-17 shield offers 99% UV protection and features a clear, anti-scratch coating, while the RapidFire™ shield replacement system allows for quick, tool-less shield changes, ensuring minimal downtime and maximum convenience. Interior components, including moisture-wicking crown and cheek pads, are removable and washable, maintaining hygiene and comfort on long journeys. The helmet also incorporates glasses grooves to accommodate riders who wear eyeglasses or sunglasses, enhancing usability for all riders. The integrated sun visor, deployed swiftly via a user-friendly sliding system, provides additional protection against glare and sun exposure. Designed with rider convenience in mind, the helmet includes removable and interchangeable cheek pads across all shell sizes, speaker pockets for Bluetooth communication (sold separately), and readiness for HJC’s SMART Bluetooth system. Weighing approximately 1.7 pounds, this helmet balances safety, comfort, and modern features, making it suitable for both daily commuting and long-distance touring.
Features:
- Advanced Polycarbonate Composite Shell: Lightweight and durable construction with superior fit and comfort using advanced CAD technology
- Adjustable Chinbar: Allows quick conversion between full-face and open-face modes
- Advanced Channeling Ventilation System (ACS): Full front to back airflow flushes heat and humidity for a cooler ride
- Pinlock®-Prepared HJ-17 Shield: Provides 99% UV protection with anti-scratch coating
- RapidFire™ Shield Replacement System: Tool-less, ultra-quick shield changes for convenience
- Moisture-Wicking & Washable Interior: Crown and cheek pads for enhanced hygiene and comfort
- Integrated Sun Visor: Black dark smoke sun visor deploys easily, protects against glare
- Glasses Grooves: Accommodates riders who wear eyeglasses and sunglasses
- Interchangeable Cheek Pads: Compatible across all shell sizes for customized fit
- Speaker Pockets: Designed for Bluetooth communication (Bluetooth sold separately)
- Ready for SMART HJC Bluetooth: Facilitates seamless communication for riders





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