Troy Lee Designs D4 Carbon MIPS BMX Race Helmet-Optic Black Helmet Size:Adult X-Large 3 is available with a

3 is available with a quick 25mm offset

or 20mm axles

Thickness: 18mm / 24mm @ bearing cover

The Stay Strong Carbon Disc BMX Race Wheelset-20x11/8" has sealed alloy hubs

CNC 3D Dropouts with Built in Chain Tensioners and Disc Hanger

Troy Lee Designs D4 Carbon MIPS BMX Race Helmet-Optic Black Helmet Size:Adult X-Large 3 is available with aThe Troy Lee Designs D4 Carbon MIPS BMX Race Helmet Optic Black delivers top tier protection with a lightweight carbon shell and advanced safety features. Engineered for high speed BMX and downhill performance, it combines Mips technology with an EPP chin bar and emergency release cheek pads for added security. Designed for comfort and durability, this helmet keeps riders cool with moisture wicking materials and strategically placed ventilation.