Troy Lee Designs D4 Polyacrylite MIPS Helmet Linear Black ss23 With an internal stiffening plate

With an internal stiffening plate for optimal power transfer and an Ultratac™ rubber sole with hex-shaped lugs for superior grip and durability

the cat that always lands on his feet — Sammy ‘C’ Carlson

Gripwalk Soles

and ladder obstacles

Dri-Flo (moisture-wicking)

Troy Lee Designs D4 Polyacrylite MIPS Helmet Linear Black ss23 With an internal stiffening plateEngineered for aggressive riding and trusted by elite downhill and BMX athletes, the Troy Lee Designs D4 Polyacrylite MIPS Helmet delivers proven impact protection in a lightweight, cost efficient shell. Mips C2 technology reduces rotational forces during crashes, while the Collarbone Suspension System and breakaway visor screws add critical safety enhancements. Ventilation is optimized through a multi port intake system, and the interior fit is fine