Troy Lee Designs D4 Polyacrylite MIPS BMX Race Helmet-Shadow Blue Helmet Size:Adult X-Small Constructed with super strong and

Constructed with super strong and lightweight alloy

S&M machined the stem body and two-piece cap to cut down even more weight without sacrificing any strength

Enhanced strength thanks to the trusted 41 Thermal heat-treating process is backed by a lifelong warranty against bending

Rennen takes their commitment to BMX racing technology seriously and with the Rennen Ultralite Hydrogen Bottom Bracket at J&R Bicycles this is obvious

HUB SHELL: cold forged and CNC machined aluminum

Troy Lee Designs D4 Polyacrylite MIPS BMX Race Helmet-Shadow Blue Helmet Size:Adult X-Small Constructed with super strong andThe Troy Lee Designs D4 Polyacrylite MIPS BMX Race Helmet is the lightweight and budget friendly version of the popular D4 full face helmet. The D4 Polyacrylite features the same engineering as the premium carbon and composite models with an advanced poly shell. Built with the Mips C2 Rotational Impact Brain Protection System for extra armor against rotational impacts and breakaway visor screws. The padding in this helmet is anti microbial to cut down