The 4S Speed TLS riding helmet from GPA Flowsystem is a highly advanced safety product designed specifically for riders. Its innovative four-layer construction provides comprehensive protection against impacts and collisions. Each layer of the helmet plays a crucial role in energy absorption and pressure distribution to minimize the risk of head injuries. The outer shell made of an absorbing polymer deforms upon impact, while the inner layer made of an elastomer developed for Formula 1 further dampens the impact energy. The combination of fiberglass reinforcement and an EPS shell adds extra rigidity and protection. The helmet is also equipped with a comfortable, antibacterial inner lining that ensures a pleasant fit and can be easily cleaned. Thoughtful ventilation ensures optimal air circulation, enhancing comfort while riding.
| Colour | Black | 
| Exact colour description | Matt black | 
| Head circumference | 54 cm | 
| Item number | 61546251 | 
| Manufacturer | GPA | 
| Category | Riding helmets | 
| Manufacturer no. | GPA4SATLSMBK54 | 
| Release date | 30.8.2025 | 
| Colour | Black | 
| Exact colour description | Matt black | 
| Material group | Fabric, Foam material, Plastic | 
| Material | Antibacterial fabric, Comfort foam, EPS damping element, Fiber optic, Thermo-composted elastomer resin, Thermocomposite resin | 
| Head circumference | 54 cm | 
| Country of origin | France | 
| CO₂-Emission | |
| Climate contribution |