Product Details
The HJC C91N Jyn MC3HSF Yellow is a practical flip-up motorcycle helmet with a high-visibility yellow Jyn graphic. It combines an adjustable chin bar, an integrated dark-smoke sun shield and a Pinlock-ready visor with the comfort and communication preparation needed for commuting, touring and everyday road use.
Who is the HJC C91N for?
The C91N is designed for commuters, touring riders and everyday motorcyclists who value the convenience of a flip-up chin bar without moving into HJC's premium modular range. Its glove-friendly chin-bar lever, sun shield, glasses grooves and prepared communication system make it particularly useful for regular road riding and longer journeys.
Modular design, visibility and ventilation
The Advanced Polycarbonate Composite shell is shaped using CAD technology to balance fit, comfort and manageable weight. The chin bar opens using a single lever designed to be operated while wearing gloves. HJC's ACS ventilation system moves air from the front of the helmet towards the rear through channels in the EPS liner to help clear heat and humidity.
The clear HJ-17 visor provides 99% UV protection and includes pins for a compatible Pinlock insert. HJC's RapidFire mechanism allows tool-free visor removal, while the integrated dark-smoke HJ-V5 sun shield uses a manual sliding control and an anti-scratch coating for changing light conditions.
Comfort and communication preparation
The SuperCool interior uses moisture-wicking, anti-bacterial fabric. The crown liner and cheek pads are removable and washable, and glasses grooves help reduce pressure around eyewear. Speaker pockets are built in, and the helmet is prepared for the optional Smart HJC 10B and 20B Bluetooth systems.
Key features
- ECE 22.06 approved flip-up motorcycle helmet
- Advanced Polycarbonate Composite shell
- Glove-friendly single-lever adjustable chin bar
- Clear Pinlock-ready HJ-17 visor with 99% UV protection
- RapidFire tool-free visor removal system
- Integrated dark-smoke HJ-V5 sun shield
- ACS full front-to-back ventilation
- Moisture-wicking, anti-bacterial SuperCool interior
- Removable and washable crown liner and cheek pads
- Glasses grooves and Bluetooth speaker pockets
- Micrometric quick-release buckle
HJC C91N specifications
| Specification | Details |
|---|---|
| Helmet type | Flip-up modular motorcycle helmet |
| Approval | ECE 22.06 |
| Shell | APC Advanced Polycarbonate Composite, shaped using CAD technology |
| Shell sizing | Three shell sizes across XS–XXL |
| Chin bar | Adjustable chin bar operated by a glove-friendly single lever |
| Main visor | Clear HJ-17 visor with 99% UV protection and Pinlock-ready pins |
| Visor mechanism | RapidFire tool-free visor replacement system |
| Sun shield | Integrated dark-smoke HJ-V5 sun shield with anti-scratch coating |
| Ventilation | ACS Advanced Channelling Ventilation System with full front-to-back airflow |
| Interior | SuperCool moisture-wicking, anti-bacterial fabric |
| Lining care | Removable and washable crown liner and cheek pads |
| Cheek pads | Interchangeable throughout the shell-size range |
| Fastener | Micrometric quick-release buckle |
| Glasses compatibility | Glasses grooves for prescription glasses or sunglasses |
| Communication readiness | Speaker pockets and preparation for Smart HJC 10B or 20B systems |
| Warranty | Up to 3 years from purchase or 5 years from manufacture, whichever comes first |
HJC C91N size guide
Measure around the widest part of your head, approximately 2.5 cm above your eyebrows and just above your ears. Use the measurement as a starting point, then check the fit in person where possible. This listing is offered in the sizes shown below.
| Helmet size | Head circumference (cm) |
|---|---|
| XS | 54–55 |
| S | 55–56 |
| M | 57–58 |
| L | 58–59 |
| XL | 60–61 |
| XXL | 62–63 |
What is supplied?
- HJC C91N flip-up motorcycle helmet in the selected size and colourway
- Fitted clear HJC HJ-17 Pinlock-ready visor
- Integrated dark-smoke HJC HJ-V5 sun shield
The Pinlock insert and Smart HJC Bluetooth communication system are sold separately.
Compatible optional accessories
The HJ-17 visor accepts the compatible DKS088 Pinlock 70 insert. The helmet is also prepared for Smart HJC 10B and 20B Bluetooth systems. Optional inserts and communication units are not supplied with the helmet.
HJC C91N questions and answers
Is the HJC C91N ECE 22.06 approved?
Yes. The C91N meets the ECE 22.06 motorcycle helmet standard.
Does the HJC C91N include a Pinlock insert?
No. The clear HJ-17 visor is Pinlock-ready, but the compatible DKS088 Pinlock 70 insert is sold separately.
Does it have an internal sun visor?
Yes. The C91N includes an integrated dark-smoke HJ-V5 sun shield with an anti-scratch coating and manual sliding control.
Can I fit a Bluetooth intercom?
Yes. Speaker pockets are built in and the helmet is prepared for the optional Smart HJC 10B and 20B communication systems.
Is the lining removable?
Yes. The crown liner and cheek pads can be removed and washed. Follow HJC's care instructions and allow the interior to dry naturally.
HJC C91N video
Moto Central helmet fitting guidance
A flip-up helmet should feel evenly snug without painful pressure points, with the chin bar closing securely and the visor operating freely. Visit Moto Central in Wolvey if you would like fitting advice from our team.