T-27B Modular Helmet with Communication System (T27B15:23) by TORC®. The T27 is truly an innovative modular helmet with sport styling. Every detail from the thumb latch opening to the smoothlock mechanical drop down sun visor with locking detent has been meticulously perfected, creating a lightweight shell that is quitter and more aerodynamic with one of the most comfortable fits ever develop for a modular helmet. Blinc Communication System.