Bell 281 Helmet Shield - SRV (Fits Sport & BR.1) Race Technologies The Valvetronic system uses electronically

The Valvetronic system uses electronically controlled valves that open or close based on signals from the onboard control system or a manual controller

Alongside the easiest tuning process available

accompanied by a barrage of pops and crackles upon deceleration and downshifting

Available in your choice of durable OEM-style fabrics to easily match any interior

while the ergonomic contours offer hours of comfort

Bell 281 Helmet Shield - SRV (Fits Sport & BR.1) Race Technologies The Valvetronic system uses electronicallyBell 281 Replacement Helmet Shield fits the Bell Sport and BR. 1, as well as all SA2010 Bell M4, BR 1, and Sport Helmets. Also fits older Bell Sport 3, and M3 helmets equipped with the SRV style pivot (non detent). Bell recommends that you periodically change shields for better vision and safety. All shields come with adjustable tear off posts.