


6D - Alterra Segment Helmet (MTB)
6D - Alterra Segment Helmet (MTB)
For long pedals and big descents, the 6D - Alterra Segment Helmet (MTB) is easy to live with: quiet on the climb, planted when the trail turns rough, and confidence you can feel when speeds pick up. 6D’s ODS® system floats the inner liner to help manage both sharp hits and twisting forces, so crashes feel a little less chaotic and rides feel a lot more relaxed.
Out on the dirt, Emergency‑release cheek pads add a layer of peace of mind, an adjustable visor dials in coverage and goggle parking, and multiple shell/EPS sizes help nail the fit. It’s the kind of helmet that disappears on the climb and shows up when it counts.
Features:
- ODS® (Omni‑Directional Suspension) reduces angular and linear impact energy.
- Dual‑layer liner system with multi‑density EPS/EPP and isolation dampers.
- Active ventilation with multiple intake and exhaust ports for airflow.
- Comfort liner is removable, washable, and anti‑microbial.
- Emergency‑release cheek pads for safer helmet removal.
- Clavicle‑friendly shell cut‑away reduces collarbone contact.
- Compatible with most popular neck‑brace systems.
- Secure D‑ring closure for a reliable fit.
- Optimized fit with multiple shell and EPS sizes (model‑dependent).
- Adjustable visor with lightweight alloy hardware (where applicable).
- Protective helmet bag/case included (model‑dependent).
- Meets relevant safety standards for its category (DOT/ECE/ASTM as applicable).
Original: $9,453,000.00
-70%$9,453,000.00
$2,835,900.00Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
6D - Alterra Segment Helmet (MTB)
For long pedals and big descents, the 6D - Alterra Segment Helmet (MTB) is easy to live with: quiet on the climb, planted when the trail turns rough, and confidence you can feel when speeds pick up. 6D’s ODS® system floats the inner liner to help manage both sharp hits and twisting forces, so crashes feel a little less chaotic and rides feel a lot more relaxed.
Out on the dirt, Emergency‑release cheek pads add a layer of peace of mind, an adjustable visor dials in coverage and goggle parking, and multiple shell/EPS sizes help nail the fit. It’s the kind of helmet that disappears on the climb and shows up when it counts.
Features:
- ODS® (Omni‑Directional Suspension) reduces angular and linear impact energy.
- Dual‑layer liner system with multi‑density EPS/EPP and isolation dampers.
- Active ventilation with multiple intake and exhaust ports for airflow.
- Comfort liner is removable, washable, and anti‑microbial.
- Emergency‑release cheek pads for safer helmet removal.
- Clavicle‑friendly shell cut‑away reduces collarbone contact.
- Compatible with most popular neck‑brace systems.
- Secure D‑ring closure for a reliable fit.
- Optimized fit with multiple shell and EPS sizes (model‑dependent).
- Adjustable visor with lightweight alloy hardware (where applicable).
- Protective helmet bag/case included (model‑dependent).
- Meets relevant safety standards for its category (DOT/ECE/ASTM as applicable).










