WARNING: California’s Proposition 65
Proposition 65 Warning for California Consumers
Shoei X-12 Front Air Intake Helmet Accessories
X-Twelve Front Air Intake, Black. The vent is held on the helmet with adhesive tape, which is included.
New - Brand new item in original packaging (original manufacturer's warranty may apply).
Used Like New - Brand new and in perfect working condition. Original packaging may be missing or slightly damaged.
Lightly 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.
Used - Good - Item may show slight to moderate use but remains in good condition and functions properly. Item may arrive with damaged packaging or be repackaged.
Used - Acceptable - Item is fairly worn but continues to function properly. Item may have identifying markings on it or show other signs of previous use. Item may arrive with damaged packaging or be repackaged.
NOTE: These sizing charts are provided by the specific manufacturer or the distributing company for this brand. Motorhelmets.com is not responsible or guarantee's the accuracy of the measurement or fit of the merchandise listed on this page.
To access our measuring tape Click Here. 
(Download the following head measuring tape, print, cut and measure your head.)
Each helmet model has small differences in its shape that ultimately affect the fit. For this reason, it is essential to test a helmet before buying it. Test whether it sits on your head properly by putting on the helmet and moving your head to the left and right, as well as up and down while holding the helmet firmly with both hands. If your head can move too freely within the helmet, we recommend that you try a smaller size. If you feel local pressure points, then choose a helmet that is one size larger, or perhaps try on a different model.
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.
| SIZE | HEAD (CM) | HAT SIZE | HEAD (IN) |
|---|---|---|---|
| 2XS | 51 - 52 | 6 3/8 - 6 1/2 | 20 1/8 - 20 1/2 |
| XS | 53 - 54 | 6 5⁄8 - 6 3⁄4 | 20 7⁄8 - 21 1⁄4 |
| SM | 55 - 56 | 6 7⁄8 - 7 | 21 5⁄8 - 22 |
| MD | 57 - 58 | 7 1⁄8 - 7 1⁄4 | 22 1⁄2 - 22 7⁄8 |
| LG | 59 - 60 | 7 3⁄8 - 7 1⁄2 | 23 1⁄4 - 23 5⁄8 |
| XL | 61 - 62 | 7 5⁄8 - 7 3⁄4 | 24 - 24 3⁄8 |
| 2XL | 63 - 64 | 7 7⁄8 - 8 | 24 3⁄4 - 25 1⁄8 |
| 3XL | 65 - 66 | 8 1⁄8 - 8 1⁄4 | 25 5⁄8 - 26 |
