ALPINESTARS(MX) SM3 Radium Helmet — Size S, Black, Red, White

Designed for motocross, enduro and off-road riding, this helmet combines ease of use, comfort and optimized impact performance. 🏁

The thermo-injected shell incorporates a special polymer blend with variable thickness to deliver a balance of impact protection and low weight.

A patented low-friction coating applied to the inner EPS liner reduces rotational acceleration in certain oblique impacts by acting as a slip plane similar to cerebrospinal fluid.

The patented visor release system allows the visor to detach at a predetermined force to help reduce loads on the neck during an impact.

Ventilation is maximised with 10 inlets and 7 exhaust ports to promote efficient heat transfer and rider comfort during extended use.