Smith Mainline Mips Full Face Mountain Bike Helmet

Full-face coverage for enduro stages and downhill laps

From rocky gaps to the final stage of an enduro race, the Smith Mainline Mips Full Face Mountain Bike Helmet pairs downhill-certified protection with ventilation for hard efforts. Complete KOROYD® coverage, Mips® technology, and a customizable pad system bring impact protection and a tailored fit to your riding kit.

Protection for demanding terrain

• Complete KOROYD® coverage: Lightweight, ventilated construction designed to absorb impact energy.
• Mips® technology: Designed to help reduce rotational forces during certain angled impacts.
• Downhill certified: Meets the ASTM F1952 Downhill standard.
• Additional standards: Complies with the U.S. CPSC Bicycle Helmet Safety Standard for persons age 5 and older, CE EN 1078, and NTA 8776 E-Bike.

Airflow and a personalized fit

• 21 fixed vents: Keep air moving through climbs, race stages, and bike park laps.
• AirEvac ventilation: Designed to integrate with Smith performance goggles to help reduce lens fogging.
• Customizable padding: Three washable cheek pad kits, two crown liners, and two neck rolls let you fine-tune the fit.
• D-ring chin strap: Provides a snug, secure fastening system.
• Adjustable visor: Lets you adjust the visor position to suit your setup.
• Odor-resistant lining: Hybrid X-STATIC® / Ionic+® antibacterial performance lining helps manage odor.

Sizes and specifications

• Small: 51–55 cm head circumference
• Medium: 55–59 cm head circumference
• Large: 59–62 cm head circumference
• Colors: Matte Royal Navy and Matte Black
• Listed weight: 27 oz / 770 g, size Medium with Mips

Measure your head circumference before choosing a size, then use the included pad options to refine your fit.