Advice & Guides Advice: How to make sure your helmet fits correctly
You'd be surprised how many riders wear a helmet that's too big for them. Here's how to tell if a lid really fits you...
1 Feb 2022
HJC F100 - Bios Black
Dual homologated AFC helmet with integrated sun visor, ventilation system and quick dry interior
Details
RRP
£339.99
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Verified Customer Reviews for HJC F100
Nice Helmet
14 July 2025 by AL
For a P&J helmet the wind noise is not too bad, ventilation is good. The visor, sun visor and chin guard are really easy to operate on the move wearing gloves.
Style: Plain Matt Black
Helpful?
Comfy and well fitting
08 May 2025 by Anonymous
For a P and J homologated helmet ,this one fits my size L head very well
Style: Plain Pearl White
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Description
Product Specification
Variants
Manufacturer
HJC F100 - Bios Black
- Advanced Fibreglass Composite shell construction
- Ultra-lightweight aerodynamic shell structure
- Highly impact-resistant
- Dual homologated (P/J): fully convertible full face / open face
- Pinlock ready HJ-45 visor with anti-scratch treatment provides 99% UV protection
- Front to back airflow: two intakes and one exhaust
- Micro buckle locking system
- Moisture wicking and quick drying interior
- Crown and cheek pads are removable and washable
- Glasses grooves accommodate eyewear
- Pinlock, chin curtain and breath deflector included
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