Giro Helios Spherical MIPS Helmet - Matte Black Size:M 15") and tire width up

15") and tire width up to 2

Max Front Difference: 0 Teeth (made for 1x12 systems)

and can be removed as quickly

A tire with maximum grip wears quicker and rolls more slowly

Sony and many others

Giro Helios Spherical MIPS Helmet - Matte Black Size:M 15") and tire width upThe heart of the Helios's extraordinary design and performance is Spherical Technology, which utilizes a ball and socket design powered by Mips, the market leading brain protection system that can help to reduce rotational forces. Spherical Technology allows the helmet's outer liner to rotate around the inner liner during a crash, and also allows Progressive Layering of the inner and outer liners to provide more comprehensive protection and