MET Helmets

MY26 Trenta 3K Carbon Limited Edition - WC Rainbow

MET MY26 Trenta 3K Carbon Limited Edition - WC Rainbow is a race-focused road cycling helmet built for riders who prioritize cooling efficiency and modern impact protection without compromising fit and stability. Refined in MET’s proprietary wind tunnel (“the Tube”), it targets the demands of long climbs, hot summer racing, and high-output group rides where ventilation and comfort directly affect performance.

With a reported 16% increase in ventilation validated via thermal-cell testing and 24 external vents feeding optimized internal channeling, the Trenta 3K Carbon is designed to move air consistently at both low speeds on climbs and higher speeds on fast road sections. The WC Rainbow limited-edition finish adds a distinct, race-heritage look to a helmet that has been seen at the top level of Grand Tour competition.

What sets this road helmet apart

• Thermal-cell validated ventilation - Reported 16% increase in ventilation in MET’s wind tunnel testing to help manage heat during sustained efforts
• 24-vent cooling layout - High airflow intake paired with internal channeling for more consistent cooling across the scalp
• 3K Airframe internal structure - Creates a continuous front-to-rear air channel intended to keep airflow moving on climbs and descents
• Mips Air system - Rotational impact protection integrated with minimal bulk to preserve ventilation and fit comfort
• Updated impact performance - Reported 40% improvement in linear and rotational impact performance vs. the previous version, with a Virginia Tech 5-Star safety rating