AGV K1 S Street Full-Face Motorcycle Helmet — Matte Black Medium, DOT Certified, GT4 Visor

The AGV K1 S Street is a DOT-certified full-face motorcycle helmet in matte black that balances race-inspired protection with everyday comfort for street riders.

Built from a high-resistance thermoplastic shell and engineered with ventilation borrowed from sport designs, the K1 S Street brings secure fit, clear visibility, and washable interior comfort to daily riding. This medium-size helmet ships with a wide-field GT4-style visor (Pinlock MaxVision-ready) and a race-proven double-D chinstrap, making it a solid choice for commuters and weekend riders who want dependable safety equipment without premium race-laminate pricing.

How does the K1 S Street manage airflow and keep you cool?

The helmet uses large inlet vents at the front and crown, combined with rear extractors, to create steady airflow across the helmet interior. That circulation reduces heat build-up during long rides and helps keep the liner fresh.

• Large front and crown vents for intake
• Rear extractors to pull warm air out
• Continuous channeling reduces interior moisture
• Vent controls allow on-the-fly adjustments

What visibility and visor features does it offer?

Equipped with a Pinlock MaxVision-prepared GT4 visor, the K1 S Street delivers a wide, distortion-free field of view and can accept anti-fog inserts. A clear visor is included so riders can start using the helmet right away in mixed weather and lighting.

• GT4 visor geometry for expansive peripheral vision
• Pinlock MaxVision-ready for reliable anti-fog performance
• Clear visor included; simple to swap for tinted options
• Tool-free visor removal for easy maintenance

How secure and comfortable is the fit for everyday use?

The K1 S Street comes in two shell sizes to keep shell volume matched to head size, improving balance and reducing weight in a medium helmet. A double-D ring chinstrap ensures a snug, race-proven closure while the removable, washable liner simplifies hygiene after long or frequent rides.

• Two shell sizes for optimized fit and weight distribution
• Double-D chinstrap for a reliable, adjustable lock
• Removable and washable interior for easy cleaning
• Medium shell tuned to common rider head shapes

What safety standards and protection does the helmet meet?

The K1 S Street is designed to meet DOT FMVSS 218 certification, indicating it conforms to U.S. federal crash performance requirements. The high-resistance thermoplastic shell offers impact protection while keeping manufacturing consistency for everyday reliability.

• Meets DOT FMVSS 218 federal safety standard
• High-resistance thermoplastic shell construction
• Secure chinstrap retention system
• Removable liner maintains fit and hygiene over time

Who is this for: The AGV K1 S Street in matte black (Medium) fits riders seeking a practical, DOT-certified full-face helmet that combines sport-derived features with commuter-friendly value. It's ideal for daily commuters, city riders, and weekend sport-touring enthusiasts who want dependable ventilation, a wide field of view, and an easy-care interior without stepping into top-tier race carbon models.