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HJC C91 Lower Vent Set

HJC C91 Lower Vent Set

SKU:0947-2105-00

Regular price $5.99
Regular price Sale price $5.99
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HJC · Helmet Parts

Replacement Lower Vent Set for HJC C91

The HJC C91 Lower Vent Set is a replacement vent component designed specifically for the HJC C91 helmet. It’s intended to restore proper lower-vent function when the original part is worn, damaged, or missing.

Built to help improve airflow and ventilation, this lower vent set supports better comfort and cooling during rides. It’s offered in multiple color options to match the helmet’s look, and it’s designed for straightforward installation, making it a practical choice for routine maintenance or a quick refresh of the helmet’s ventilation hardware.

  • FitsC91

Ventilation

Improved Airflow Function

Designed to enhance airflow and ventilation, the C91 Lower Vent Set helps support cooling and riding comfort by restoring lower-vent performance. It’s a simple way to bring back the ventilation function that can be reduced when the original vent components become damaged or degraded.

Installation

Durable and Easy to Install

Made from durable, long-lasting materials, this vent set is intended for quick maintenance or replacement. Its easy-install design helps riders handle a vent refresh with minimal downtime, keeping the helmet ready for regular use.

Ventilation

Restore Lower Ventilation

The C91 Lower Vent Set is built to bring back lower-vent airflow on HJC C91 helmets. When a vent is cracked, missing, or no longer functioning as intended, replacing it can help return the helmet’s ventilation behavior and improve comfort and cooling during the ride. Because it’s designed specifically for the C91, it’s a straightforward way to maintain the helmet’s original vent layout without changing to a different setup.

Installation

Quick Maintenance Replacement

This replacement lower vent set is designed for easy installation, helping make routine upkeep simpler. It’s suited for riders who want a practical fix after normal wear or an impact that damages external vent parts. With multiple color choices available, it can also be used to match the helmet’s existing finish while keeping the ventilation components in working order.

Available Colors & Sizes

Color Sizes HJC Part Numbers
Black One Size 0947-2105-00
Nardo Gray One Size 0947-2187-00
Semi Flat Black One Size 0947-2135-00
Semi Flat Pearl One Size 0947-2149-00
Semi Flat Titanium One Size 0947-2147-00
White One Size 0947-2109-00

Compatible Helmets

HJC C91

Compatibility as listed by HJC for this part.

⚠️ WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. Learn more.