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Smith Optics Smith Mainline MIPS Bike Helmet

Smith Optics Smith Mainline MIPS Bike Helmet
  • Color: Black
  • Color: AC | Rocky Mountain Enduro
  • Color: Matte Cinder
Please select options


Featuring complete Koroyd coverage and the MIPS rotational system, the Smith Mainline helmet provides exceptional protection; plus, internal air channels and open exhaust ports maximize breathability.

-With 21 optimized vents, the AirEvac ventilation system allows goggles and helmet to function as a system, venting warm, moist air away from the goggles—and away from the head
-Koroyd provides superior impact absorption, design flexibility and ventilation when compared to materials traditionally used in helmet construction
-Utilizing crumple-zone cylinders that crush uniformly on impact, Koroyd manages energy more efficiently with less volume than traditional protection materials
-Rotational motion can cause brain injuries; with MIPS, a low-friction layer slides 10 to 15mm in all directions, reducing rotational motion to the brain during impact
-Unique pad kit includes 3 sets of sized cheekpads, 2 sets of sized crown liners and 2 neck rolls to ensure a proper fit?all of which can easily be removed for cleaning
-Pads are made from Hybrid X-Static/XT2 for antibacterial performance
-Ride with confidence, knowing the Mainline is secured with a tried-and-true D-ring chin strap fastener
-Lightweight Aerocore in-mold construction
-Adjustable visor
-Camera- and light-mount compatible
-Downhill certified; ASTM F1952

Part Numbers

Option UPC Store SKU
Black / Small 716736216850 SMI37572911S
Black / Large 716736216874 SMI27195443L
AC | Rocky Mountain Enduro / Small 716736286662 SMI47565224S
AC | Rocky Mountain Enduro / Large 716736286686 SMI47896114L
Matte Cinder / Medium 716736336459 SMI4979082D