6D Helmets Helmet Liner

Why 6D Helmets Liner Technology Stands Apart

When it comes to helmet liners, 6D Helmets approaches the subject from a fundamentally different engineering philosophy than most brands. At the heart of every 6D helmet is the patented Omni-Directional Suspension™ (ODS™) system — and the liner is not a passive comfort layer, but an active, load-bearing component of that system.

Helmet liners in a 6D helmet serve a dual role: they must deliver all-day wearability and hygiene, while also integrating seamlessly with the suspended dual-liner architecture that defines the ODS™ platform. The key differentiating factor of ODS™ lies in its patented suspended dual liner system, which sets it apart from the rest. That means the comfort liner you wear against your head isn't just foam and fabric — it's the innermost layer of a precision-engineered safety system.

The ODS™ Dual-Liner System Explained

The inner EPS liner is a crucial component of the ODS™ design, acting as the primary layer of defense — it functions as a helmet within a helmet. This inner liner nestles into the ODS™ carrier, offering strength and integrity to the EPS while reducing angular acceleration forces with its slippery surface. Surrounding that inner liner is a multi-impact EPP outer liner. The multi-impact EPP outer liner is strategically positioned against the helmet shell's inner surface and is designed with "Damping Towers" to provide a progressive spring rate to the suspended inner EPS liner during impacts.

What this means practically is that when a rider needs to replace or service their helmet liner — whether for hygiene, fit adjustment, or post-impact reconditioning — the design is built with that in mind. The replaceable EPS inner liner is engineered for low-cost reconditioning , making it possible to refresh the protective core of the helmet rather than replacing the entire unit.

Comfort Liner Features Across the 6D Lineup

6D's removable comfort liners are found across their ATR and ATB model families. Key liner features include a removable, washable, Dri-Lex® antibacterial comfort liner and emergency release cheek pads also finished in removable, washable Dri-Lex® antibacterial fabric. On the ATB-1 platform designed for MTB and BMX, the helmet incorporates a genuine CoolMax™ antibacterial comfort liner to handle moisture and temperature during high-output riding.

6D's helmets offer various shell options, cheek pads, and liners for a personalized fit and exceptional comfort , allowing riders to fine-tune their fit rather than settle for a single-size-fits-all interior. This modularity is especially valuable for riders between sizes or those logging long hours in the saddle.

Rebuildability: A Liner-Centric Design Philosophy

The ATR-3 takes head protection to the next level with its groundbreaking concept of rebuildability. Unlike traditional helmets, which are typically discarded after a significant impact, the ATR-3 is designed to be rebuilt and reused. The liner system is central to that promise — the new ODS™ carrier is lighter and simplified, enabling a modular helmet design that is easily rebuildable. For riders who invest in a premium 6D helmet, replacement liner kits represent a cost-effective way to extend the life of their protective equipment.

Whether you're sourcing a replacement comfort liner for hygiene reasons, fitting out a different head shape, or reconditioning a helmet after a low-speed impact, 6D Helmets' liner products are engineered to the same exacting standard as the helmets themselves. Explore the full range of 6D Helmets products or browse all helmet liners to find the right fit for your riding discipline.