Trek Circuit WaveCel Helmet S/M Special hardened steel

Special hardened steel

Dominion A2 features the proprietary QuickBite² system for fast and consistent burnish

and micro USB charging cable

Rounded rear profile to facilitate comfortable left and right movement

Recommended Brake kit: M9120/M8120/M7120

Trek Circuit WaveCel Helmet S/M Special hardened steelWhether your finish line is on the race course or your front door, Trek Circuit WaveCel delivers the performance, comfort and tech to be your go to helmet. It's equipped with features that any rider will appreciate, like WaveCel technology, a BOA Fit System and Blendr mount systems. WaveCel is a collapsible cellular structure that lines the inside of the helmet. This Trek exclusive technology disrupts the safety standards that the industry has