Bell Indy Sport Bicycle Helmet Closeout. The Bell Indy Sport Bicycle Helmet is all about versatility. From riding around town to chewing up some serious singletrack, this Bicycle Helmet has you covered. Extended Fusion In Mold Microshell combines superior durability with increased coverage for total protection. 15 vents enhance airflow from front to back for excellent ventilation. Ingenious ErgoDial fit system with one handed adjustment and easy setting Cam Lock levers provide a custom fit. Blade Visor quickly snaps on and off, so you can adapt to riding conditions.