Top tube straps easily adjust to mount quickly on almost any bike

Thickness: 14

The screw clamp with two movable "inserts" keeps the load on the fibres low

Clamp Diameter: 28

TLD D4 Polyacrylite Helmet - XL/2XL - Qualifier Blue/White eBay Top tube straps easily adjustD4 reigns king atop downhill podiums and BMX events across the globe. Available in carbon, composite and polyacrylite. Details are what makes the D4 the most coveted full face in mountain biking. Prioritising safety while balancing weight through premium construction and materials, D4 incorporates Mips protection with an EPP chin bar and anatomical cheek pads with emergency release. Features Mips C2 Rotational Impact Brain Protection System Offered in