Specs
| Maker | Cardo SystemsSource: Cardo Systems: HJC 4X product page (spec table), checked 9 Oct 2026 |
|---|---|
| Mesh intercom | Unknown |
| Bluetooth | Bluetooth 5.2Source: Cardo Systems: HJC 4X product page (spec table), checked 9 Oct 2026 |
| Most riders connected | Group intercom: 4 (as stated by Cardo)Source: Cardo Systems: HJC 4X product page (spec table), checked 9 Oct 2026 |
| RangeAs stated by the maker, in ideal conditions | Up to 1.2km / 0.75mi unit-to-unit; group max 3.6km / 2.2mi (as stated by Cardo)Source: Cardo Systems: HJC 4X product page (spec table), checked 9 Oct 2026 |
| Battery talk timeAs stated by the maker | Battery: 13 hours (as stated by Cardo)Source: Cardo Systems: HJC 4X product page (spec table), checked 9 Oct 2026 |
| Waterproof rating | IP65Source: Cardo Systems: HJC 4X product page (spec table), checked 9 Oct 2026 |
| Audio | 40mm JBL speakers (Sound by JBL)Source: Cardo Systems: HJC 4X product page (spec table), checked 9 Oct 2026 |
| FM radio | YesSource: Cardo Systems: HJC 4X product page (spec table), checked 9 Oct 2026 |
| Voice control | Yes: Natural Voice OperationSource: Cardo Systems: HJC 4X product page (spec table), checked 9 Oct 2026 |
| How it fits | Integrated: selected HJC helmets only (RPHA 60, RPHA 72, F71, i71, RPHA 91, i91, RPHA 31, F31 and Carbon versions)Source: Cardo Systems: HJC 4X product page, checked 9 Oct 2026 |
Helmets it fits
- HJC I71Cardo lists HJC i71 among the HJC helmets the HJC 4X is designed to integrate intoSource: Cardo Systems: HJC 4X product page, checked 9 Oct 2026
- HJC RPHA91Cardo lists HJC RPHA 91 among the HJC helmets the HJC 4X is designed to integrate intoSource: Cardo Systems: HJC 4X product page, checked 9 Oct 2026
Listed only where a maker publishes the fit (the intercom maker’s fit list, or the helmet maker’s own part codes and partnerships). We never guess a fit: check with the maker or retailer before you buy.