Alpinestars Yamaha S-M3 Motocross Helmet

Original price was: $260.54.Current price is: $79.15.

Clothing Size Conversion Chart
Category US EU UK Chest (in) Waist (in) Hips (in)
Men XS 44 34 32-34 26-28 33-35
S 46 36 34-36 28-30 35-37
M 48 38 38-40 32-34 39-41
L 50 40 42-44 36-38 43-45
XL 52 42 46-48 40-42 47-49
Women XS 32 6 31-32 24-25 33-34
S 34 8 33-34 26-27 35-36
M 36 10 35-36 28-29 37-38
L 38-40 12-14 37-39 30-32 39-41
XL 42 16 40-42 33-35 42-44
Youth XS 128 7 26-28 23-24 26-28
S 134 8 28-30 24-25 28-30
M 140 10 30-32 25-26 30-32
L 146 12 32-34 26-27 32-34
XL 152 14 34-36 27-28 34-36
Pants Size Conversion Chart
CategoryUSEUUKWaist (in)Hip (in)Inseam (in)
Men284428283430
304630303631
324832323832
345034344033
365236364234
Women0324243430
2346253530
4368263631
63810273832
84012284032
Shoes Size Conversion Chart
CategoryUSEUUKFoot Length (in)
Men6395.59.25
7406.59.625
8417.510
9428.510.25
10439.510.625
114410.511
124511.511.25
134612.511.625
Women5352.58.5
6363.58.875
7374.59.25
8385.59.625
9396.510
10407.510.25
11418.510.625
12429.511
M (Unisex)5374.58.75
6385.59
7396.59.5
8407.510
9418.510.25
10429.510.625
114310.511
124411.511.25
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Description

Alpinestars Yamaha S-M3 Motocross Helmet The Alpinestars Yamaha S-M3 is a high-performance motocross helmet designed to offer superior protection while remaining lightweight. Its modern shell construction, combined with ECE 22.06 certification, ensures reliable safety during off-road use. The lightweight outer shell made of impact-resistant thermoplastic and the multi-density EPS inner shell support effective distribution of impact forces and improved energy absorption. An integrated ventilation system with multiple inlets and outlets ensures a continuous airflow, while the aerodynamically optimized design further enhances cooling. The helmet is complemented by a patented peak release system and an emergency release system with removable cheek pads for safe helmet removal in the event of an impact. The Yamaha S-M3 is ideal for ambitious motocross and off-road riders who value safety, comfort, and performance. Features: Modern, aggressive design in collaboration with Yamaha Aerodynamically optimized construction for cooling and airflow Improved helmet shell construction for effective impact absorption Lightweight outer shell made of advanced, impact-resistant thermoplastic Multi-density EPS inner shell for efficient absorption of impact energy Integrated ventilation system with multiple air inlets and outlets Patented peak release system for safe detachment in the event of an impact Specially shaped lower helmet edge to protect the collarbone Emergency release system for quick removal of the cheek pads Specifications: Material: Thermoplastic Safety standard: ECE 22.06 Closure: Double D-ring Contents: 1x Alpinestars Yamaha S-M3 Motocross Helmet 1x Helmet bag

Additional information
Size

2XL

,

L

,

M

,

S

,

XL

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XS