Troy Lee Designs D4 Composite Helmet Choose your size:55-56 cm Fabio worked on every detail

Fabio worked on every detail of this series himself

Castelli has created a set that makes no compromises on comfort or performance

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Egal ob du auf den Trails vor deiner Haustür oder auf Worldcup-Strecken unterwegs bist

Troy Lee Designs D4 Composite Helmet Choose your size:55-56 cm Fabio worked on every detailTroy Lee Designs D4 Composite Helmet Troy Lee Designs D4 Composite Helmet Outstanding Design & Protection It wasn't easy for Troy Lee Designs to improve on the outstanding design and function of the D3 helmet. But they did it. Using a shell construction and aerospace grade materials, they managed to bring the D4 down to 1050 grams without compromising on durability. To provide an extra level of safety in the event of a fall, the MIPS C2 protection