WARNING: California’s Proposition 65
Proposition 65 Warning for California Consumers
Cardo SHOEI 4X-S Communication Head Set Accessories
The Cardo SHOEI 4X-S is built for riders who want a clean, integrated communication setup without sacrificing performance. Designed specifically for Shoei Gen 3 helmets, it installs seamlessly into the Shoei GT-Air 3, Neotec 3 and J-Cruise 3 helmets, delivering a streamlined look with powerful connectivity. With LIVE Intercom, you get a reliable Bluetooth connection for two riders with automatic reconnect, keeping communication simple and consistent on the road. JBL 40mm speakers provide clear, rich audio, while automatic volume adjustment keeps sound balanced as conditions change. Add fast charging, over-the-air updates, and universal connectivity, and you’ve got a setup that keeps you connected every mile.

New or Brand New - Brand new item in original packaging (original manufacturer's warranty may apply).
Refurbished - Professionally restored and in perfect working condition. Original packaging may be missing or slightly damaged.
Used - Item has seen limited use but remains in good working condition. May show some limited signs of wear with small scratches or cosmetic blemishes. May arrive with damaged packaging or be repackaged.
Refurbished, Without Tags - Same as refurbished. Item may arrive with mising labels or tags.
Refurbished, Last Call - Same as refurbished. Last call or closeout item.
How to measure: Wrap a soft measuring tape around the widest part of your head, approximately 1 inch (2.5 cm) above your eyebrows. Keep the tape level around the back of your head.
| HELMET SIZE | HEAD CIRCUMFERENCE (CM) | HEAD CIRCUMFERENCE (IN) |
|---|---|---|
| X-Small (XS) | 53–54 | 20¾–21¼ |
| Small (S) | 55–56 | 21⅝–22 |
| Medium (M) | 57–58 | 22½–22¾ |
| Large (L) | 59–60 | 23¼–23⅝ |
| X-Large (XL) | 61–62 | 24–24½ |
| 2X-Large (XXL) | 63–64 | 24¾–25⅕ |
Helmet should fit snugly and evenly without painful pressure points. Fasten the chin strap and check that the helmet does not move excessively.
* Sizing charts are provided by the manufacturer and do not guarantee a perfect fit.