Bell SRT Modular - Hartluck Jamo Black/Red The new SRT-Modular combines the quality construction of the SRT – fiberglass shell, recessed EPS speaker pockets, a broad range of sizing options and Panovision Class 1 optics – and adds in the versatility and convenience of a modular helmet. All the protection of a quality full-face when you need it, as well as the ease and accessibility of an open-face for when you want to face the world head-on. SRT – putting the Sport back in Sport Touring. Includes clear faceshield.