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Product Highlights & Commentary
Expert Engineering AnalysisThe SM7 Cast Helmet utilizes a high-performance multi-layer composite shell engineered specifically for the rigors of off-road racing. By blending fiberglass, carbon, and aramid fibers, Alpinestars achieves an optimal balance of impact protection, force dissipation, and sliding performance that exceeds standard monocoque designs. The aerodynamic profile is deliberately streamlined to eliminate external channels or load points that could compromise structural integrity during a crash, while the precise shell curvature is calculated to reduce friction on impact, promoting efficient energy deflection away from the rider’s head and toward the neck and spinal column.
Thermal regulation and fit customization are maximized through an ultra-ventilated architecture featuring twenty individual airflow ports. With thirteen dedicated intakes and seven exhausts, the helmet ensures continuous air circulation to manage heat buildup during high-intensity enduro or motocross sessions. The interior fit is further refined by the A-Head Fitment system, which allows for height-adjustable top pads, while the cheek pads utilize 3D foam with an emergency extraction system and integrated hydration channels; these pads are interchangeable across all shell sizes, ensuring a precise, personalized fit without the need for multiple helmet units.
Impact safety is reinforced by the Visor Detaching System and strategically placed PLASMA technology for critical zone protection. The visor is engineered to automatically detach when subjected to impact energy exceeding fifteen Joules, eliminating the inherent weaknesses of traditional anchoring systems and preventing secondary injury to the jaw and neck. Additionally, PLASMA technology is integrated into the lower side shell edges to provide superior shock absorption in the collarbone area, while the elastically connected crown and neck pads enhance oblique impact management, ensuring comprehensive protection that meets ECE06 and DOT standards.
Discipline & Application
Helmets & Eyewear
SM7 Cast Helmet
$519.95
Available
RIDER SIZING SPECIFICATION • Human Body & Headform Sizing
Helmets and apparel are sized to human body measurements. View the Official Sizing Guide below.
Free US ShippingOrders over $150
30-Day ExchangesHassle-free size swap
Manufacturer WarrantyNot Available - Standard Manufacturer
HELMET S-M7 CAST RED/YEL-FL/BLU ECE06/DOT LG Technical Performance & Engineering
Key engineered features, technical highlights, and manufacturer specifications
Key Engineered Features (22)
OEM Technical Standards- Multi-layer shell is constructed from a blend of fiberglass, carbon, and aramid fiber from the optimum blend of impact protection and force dissipation, sliding performance, energy absorption, stability, and durability
- Engineered for off-roading racing, and is optimized to offer the perfect blend of superior ventilation and comfort in a lightweight, helmet while its supremely aerodynamic composite shell delivers exceptional impact protection
- A-Head Fitment and Visor Detaching System, the SM7 is equipped with PLASMA technology at the lower side of the shell edge for optimum energy dissipation in case of contact with the collar bone area
- Key Features
- Aerodynamic profile design offers a smooth, streamlined shell free of any external channels and features that might act as a load point in an impact or compromise the overall integrity of the helmet's construction
- The shell's curvature promotes reduced friction on impact, allowing deflection and the most efficient transfer of energy to protect the rider's head from direct force and referred to the neck and spinal column
- Ultra-ventilated helmet with 20 individual intake and exhaust ports, not including the eye port, with 13 intakes and 7 exhausts, for optimum ventilation
- The fit can be further customized via the Alpinestars replacement cheek pads, which are available in all thicknesses and are exchangeable between all shell sizes
- Communication System Compatible — Cutaway section on the left-side of the EPS to seamlessly accommodate Intercom Systems, with earphone recesses on both sides for speakers
- Construction
- Linings are removable and washable by hand using warm water and neutral soap
- Fabrics have antimicrobial treatments
- Crown Pad — Crown pad and neck pad are elastically connected, for better oblique impact management
- Top Pad — The top pad is removable and adjustable in height thanks to the A-head system
- Cheek Pads — The cheek pads are fitted 3D foam, with an emergency extraction system (ERS), with a channel for hydration tube installation
- Cheek pads are interchangeable among all sizes
- Chin Strap — Chin strap is fitted with a 25 mm width nylon strap, stainless steel DD rings, removable covers for washing purpose
- Integrated channels on both sides to accommodate a hydration system
- Protection
- Visor Detaching System features a release mechanism is conceived to avoid the inherent weaknesses in other anchoring systems
- Visor is engineered to automatically detach from the shell when it is subjected to an impact energy greater than 15 Joules for optimum impact protection, regardless of the direction
- PLASMA inside; Alpinestars PLASMA technology is strategically-integrated into the SM7's side pads for high performance shock absorption in a critical area, significantly reducing risk of injuries
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