GMAX GM39Y Sierra Snowmobile Helmet Youth
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Product SKU: 4107
- This is the GMAX GM39Y Youth snowmobile helmet. This is a new helmet by GMAX and has a redesigned shield system. See the bottom of this description for available optional shields. Note that the helmet comes fitted with a clear dual lens snow shield.
- The specific features of this helmet are:
- This is a fullface youth snowmobile helmet
- DOT approved
- Shell is lightweight
- Removable, adjustable cheek pads allow custom fitting
- Removable interior allows sizing adjustments for growing heads at only the cost of a new sized interior. Replacement interiors sold separately
- Deluxe ear pockets for better fit and speaker installation
- Inner chin bar designed for easy microphone installation
- GMAX® “D.E.V.S.” adjustable “Dual Exhaust Venting System” Top, side and rear venting reduces fogging and sweating by allowing hot air to escape from the mouth area and top of head
- Adjustable chin vent directs air upwards across the inside of the shield to help reduce fogging
- Snap-in removable chin curtain for reduced noise and comfort
- Soft padded chin strap
- Painted shell with high-tech water decal's and high quality clear coat finish
- Large eyeport for improved range of vision
- Replacement parts available (at additional cost) include: Chin Curtain our part number MS128657, Breath Guard our part number MS128659
- Comes fitted with clear dual lens shield.
- Optional Shields available at additional cost include:
- Standard replacement dual lens snow shield our part number MS128663
- Tinted dual lens snow shield our part number MS128664
- Electric shield our part number MS128839
- Electric tinted shield our part number MS128840
- Tinted flip lens kit (has tinted flip lens, 2 cover washers, 2 washer scrwes, 2 washer plugs and 2 regular screws) our part number MS128887. This can serve as a sun visor. You need this entire kit to mount the lens to your helmet.
- Tinted flip lens alone (in case you lose the first one you buy) our part number MS128885
| GMAX Helmet Sizing Chart Page |
| Extragear1.com 607-693-1031 |
| Welcome to our GMAX helmet sizing page. This page indicates how you measure for helmet fit, and how you determine the size that fits you. You should note that the GMAX sizing chart is based on averages, it works for most people. |
| First, you measure for helmet fit: |
| Wrap a measuring tape around your head just above your eyebrows. Be sure to pull the tape comfortably snug. Take several measurements, to make sure you have the largest one. This is your circumference. |
| Second, determine the GMAX helmet size that is right for you: |
| Adult Sizing Chart | |
| Circumference of Your Head in Inches | Your GMAX Helmet Size |
| 21-1/4" to 21-5/8" | XSmall |
| 22" to 22-7/16" | Small |
| 22-13/16" to 23-1/4" | Medium |
| 23-5/8" to 24" | Large |
| 24-3/8" to 24-13/16" | XLarge |
| 25-3/16" to 25-5/8" | XXLarge |
| 26" to 26-3/8" | XXXLarge |
| Youth Sizing Chart | |
| Circumference of Head in Inches | Your youth GMAX Helmet Size |
| 19-11/16" to 20-1/16" | Youth Small |
| 20-7/16" to 20-7/8" | Youth Medium |
| 21" | Youth Large |