Modular Motorcycle Helmets Under $400

The AGV Numo Evo Stinger's shell is made of High-Resistance ThermoPlastic resin and has an Integrated Ventilation System with wide ducts hollowed into the shell and a rear extractor built into the neck protector. The liner is removable and washable. The face shield is made of anti-fog polycarbonate and provides 100 percent UV protection. An integrated non-scratch, anti-fog sun visor is included. The shield mechanism requires no tools and allows the replacement of the shield in seconds. (XS-XL, two colors, DOT, $319.95, www.agv.com)

Bell's Revolver EVO Segment helmet has a flip-down internal sunshield, integrated pockets for audio speakers, and a removable and washable interior. The shell has a super-stable aerodynamic signature that resists buffeting, and a chin curtain that keeps cold air from entering the helmet. A quick-release system requires no tools to take off the anti-fog, anti-scratch, and UV-resistant NutraFog II shield. The EVO Segment comes with a five-year warranty. (XS-2XL, red/black, DOT, $199.95, www.bellhelmets.com)

The G-Max GM64 has a thermoplastic polyalloy shell with Perimeter-Frame Design for protection from wind and cold by providing a constant sealing surface for the shield and jaw. The Dual Pivot chin bar can be rotated farther back and low on the crown of the helmet, and the squeeze-and-lift chin-bar release is easy to operate with gloves. The quick-detach inner sun shield has a left-side mechanism. Low-profile forehead vents can be opened or closed with gloved hands, and included plugs let you block off vent channels to customize the air flow. (XS-3XL, Hi-Viz Yellow, DOT, $199.95, www.g-max.com)

HJC's SyMax III features an advanced fiberglass shell with an adjustable polycarbonate chin bar, a one-touch integrated sun shield, and a QuickSlide shield replacement system. Vents in the front and back flush out hot air. A Pinlock-ready face shield provides 95 percent UV protection, and has an anti-scratch coating. The chin-bar release is a single button that's easy to operate with gloves. The SilverCool moisture-wicking interior has a removable and washable crown and cheek pads, and a recess for Chatterbox Bluetooth communication systems is standard. (XS-2XL, four colors, DOT, $299.99, www.hjchelmets.com)

The N91 from Nolan has a polycarbonate shell that's ready to accept the NCOM communication system. A tinted Vision Protection System mounted on the inside of the shell provides eye protection when used independently of the clear face shield. A Pinlock anti-fog shield is standard. Adjustable vents on the chin bar and top admit air, and rear extraction vents let it out. The chin bar has a dual-action release, and the retention system uses the Microlock2 double-lever design. (XS-2XL, six colors, DOT, $299.95-$319.95, www.nolan-usa.com)

Scorpion's EXO-GT3000 Sync Hi-Viz helmet comes with a TCT-Ultra Pre-Preg shell, a cable-drive SpeedView drop-down sun visor, and an aero-tuned ventilation system. Inside is an AirFit liner inflation system, contoured cheek pads that are compatible with glasses, and communications speaker pockets that accommodate BMW comm systems and others. An aero skirt keeps the cold air out, and retention is handled by a titanium double D-ring. A five-year warranty and a premium valise travel case are standard. (XS-2XL, Matte Neon/Blue, DOT, $379.95, www.scorpionusa.com)

The Speed and Strength SS1700 Solid Speed has a shell made of an advanced Thermo-poly alloy. The single-action chin-bar release makes helmet removal easy, and an Air Strike direct-course ventilation system keeps things cool inside. An internal flip-down sun shield is standard, along with the Lock 'n' Load Plus Rapid Conversion shield-replacement system and a removable and washable moisture-wicking liner. (XS-2XL, four colors, DOT and ECE 22.05, $199.95, www.ssgear.com)