The Troy Lee Designs A2 MIPS Helmet is a lightweight, low‐profile trail helmet that enhances protection and comfort for mountain bikers. Its co‐molded dual‐density EPS/EPP shell manages both high‐ and low‐speed impacts, while the integrated MIPS liner helps reduce rotational forces in crashes. Large intake and exhaust vents—25 % larger than its predecessor—channel airflow through deep internal passages to keep riders cool. A breakaway visor, adjustable strap dividers, and a three‐position rear stabilizer fit system allow personalized customization, and the removable, moisture‑wicking liner is machine‑washable for easy maintenance.

• Shell: dual‐density EPS co‑molded with EPP for multi‑impact energy management

• Safety: integrated MIPS liner to mitigate rotational forces

• Ventilation: oversized intake and exhaust ports (25 % more airflow vs. A1) with deep internal channels

• Fit system: rear stabilizer with three vertical positions and adjustable strap dividers

• Visor: breakaway mounting hardware for safety and adjustability

• Liner: moisture‑wicking, removable pads with Velcro backing