# C 91 LOWER VENT

Replacement lower vent set for HJC C91 helmets. The HJC C 91 LOWER VENT is a genuine OEM replacement part engineered to fit and finish your HJC helmet exactly as it left the factory. Every HJC component is built to the same tight tolerances and quality standards as the original, so installation is straightforward and the result is indistinguishable from new.

### Key Features

-   Specifically fits HJC C91 helmets
-   Enhances airflow for better ventilation
-   Made from durable, long-lasting materials
-   Easy to install for quick maintenance or replacement

### Helmet Compatibility

This replacement part is designed specifically for HJC C91 helmets. Always verify your helmet model before ordering to ensure compatibility.

### Why Shop at The Helmet Shop?

-   Genuine HJC OEM part — not aftermarket or generic
-   Authorized HJC dealer with full manufacturer support
-   Fast US-based shipping
-   Easy returns and friendly expert customer service

### You may also like

-   [C10/CL-17/CS-R3 BREATH BOX](/products/c10-cl-17-cs-r3-breath-box)
-   [ICON Airform- Helmet Side Plates - Facelift](/products/icon-airform-helmet-side-plates-facelift)
-   [Scorpion EXO XT9000 Baseplate Set](/products/scorpion-xt9000-baseplate-set)

## Details

- **Price:** 5.99 USD
- **Vendor:** HJC
- **Type:** Helmets - Parts

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| BLACK | 5.99 USD | In stock |
| WHITE | 5.99 USD | In stock |
| SEMI FLAT BLACK | 5.99 USD | In stock |
| SEMI FLAT TITANIUM | 5.99 USD | In stock |
| SEMI FLAT PEARL WHITE | 5.99 USD | In stock |
| NARDO GREY | 5.99 USD | In stock |

## Images

- C 91 LOWER VENT
- C 91 LOWER VENT
- C 91 LOWER VENT
- C 91 LOWER VENT
- C 91 LOWER VENT
- C 91 LOWER VENT

---

> Source: [The Helmet Shop](https://helmetshop.com/products/c-91-lower-vent)
> Updated: 2026-06-03