Bike Helmets
(135 products)- Staff Pick
SmithSignal MIPS Bike Helmet
$85.00Helmet Style:Road BikeWeight:0.66 lbsFeatured Tech:Mips - Top Rated
SmithEngage Mips Bike Helmet
$130.00Helmet Style:Mountain BikeWeight:0.77 lbsFeatured Tech:Mips - Staff Pick
SmithPersist Mips Bike Helmet
$130.00Helmet Style:Road BikeWeight:0.66 lbsFeatured Tech:Mips SmithForefront 3 Mips Bike Helmet
$270.00Helmet Style:Mountain BikeWeight:0.9 lbsFeatured Tech:Mips- Staff Pick
ThousandHeritage 2.0 Bike Helmet
$73.93 - $99.00Helmet Style:Skate / BMXWeight:0.97 to 1.15 lbs - Staff Pick
SmithConvoy MIPS Bike Helmet
$85.00Helmet Style:Mountain BikeWeight:0.66 lbsFeatured Tech:Mips - Top Rated
TrekSolstice Mips Bike Helmet
$70.00Helmet Style:Recreational CyclingWeight:0.74 to 0.83 lbsFeatured Tech:Mips - Top Rated
TrekStarvos WaveCel Bike Helmet
$105.00Helmet Style:Road BikeWeight:0.66 to 0.85 lbsFeatured Tech:WaveCel - Top Rated
GiroAgilis MIPS Bike Helmet
$74.93 - $99.95Helmet Style:Road BikeWeight:0.66 lbsFeatured Tech:Mips GiroFixture Mips II Bike Helmet
$74.95Helmet Style:Mountain BikeWeight:0.73 lbsFeatured Tech:MipsCannondaleTrail Bike Helmet
$50.00Helmet Style:Mountain BikeWeight:0.66 lbsGiroRegister Mips II Bike Helmet
$74.95Helmet Style:Recreational CyclingWeight:0.73 lbsFeatured Tech:Mips- Staff Pick
GiroFixture Mips II Bike Helmet - Kids'
$74.95Helmet Style:Mountain BikeWeight:0.72 lbsFeatured Tech:Mips GiroScamp Mips II Bike Helmet - Kids'
$55.93 - $74.95Helmet Style:Recreational CyclingWeight:0.55 to 0.57 lbsFeatured Tech:Mips- Top Rated
SmithSession MIPS Bike Helmet
$170.00Helmet Style:Mountain BikeWeight:0.82 lbsFeatured Tech:Mips - Top Rated
SmithExpress MIPS Cycling Helmet
$65.93Save 40%compared to  $110.00Helmet Style:Recreational CyclingWeight:0.73 lbsFeatured Tech:Mips FoxSpeedFrame Mips Bike Helmet
$109.95Helmet Style:Mountain BikeWeight:0.82 to 0.97 lbsFeatured Tech:MipsGiroCaden II Bike Helmet
$55.73Save 30%compared to  $80.00Members use code OUTAPRIL25 to save an extra 25%Helmet Style:Recreational CyclingWeight:0.73 lbsREI OUTLET- Top Rated
FENDSuper + Lights Foldable Bike Helmet
$95.93 - $129.00Helmet Style:Recreational CyclingWeight:1.06 to 1.08 lbs - Top Rated
SmithTriad Mips Bike Helmet
$190.00Helmet Style:Road BikeWeight:0.64 lbs SmithZip Jr. Mips Bike Helmet - Kids'
$54.73Save 27%compared to  $75.00Members use code OUTAPRIL25 to save an extra 25%Helmet Style:Road BikeWeight:0.6 lbsFeatured Tech:MipsREI OUTLETGiroArtex Mips Bike Helmet
$97.73Save 30%compared to  $140.00Helmet Style:Mountain BikeWeight:0.75 lbsFeatured Tech:MipsREI OUTLETGiroSynthe Mips II Bike Helmet
$139.73Save 30%compared to  $200.00Helmet Style:Road BikeWeight:0.61 lbsFeatured Tech:MipsREI OUTLET- Top Rated
woomBike Helmet - Kids'
$69.95Helmet Style:Recreational CyclingWeight:0.62 to 0.66 lbs - Top Rated
SmithPayroll Mips Helmet
$200.00Helmet Style:Electric Bike, Mountain BikeWeight:0.88 lbsFeatured Tech:Mips - Top Rated
GiroRadix MIPS Bike Helmet
$74.93 - $99.95Helmet Style:Mountain BikeWeight:0.7 lbsFeatured Tech:Mips - Top Rated
TrekRally WaveCel Helmet
$95.83Save 40%compared to  $160.00Helmet Style:Mountain BikeWeight:0.79 lbsFeatured Tech:WaveCel LazerCerro KinetiCore Bike Helmet
$100.00Helmet Style:Road BikeWeight:0.6 lbsFoxSpeedframe Pro Fade Bike Helmet
$132.73Save 30%compared to  $189.95Members use code OUTAPRIL25 to save an extra 25%Helmet Style:Mountain BikeWeight:0.78 to 0.91 lbsFeatured Tech:MipsREI OUTLETFoxProFrame Mips Bike Helmet
$289.95 - $299.95Helmet Style:Full-faceWeight:1.59 to 2.03 lbsFeatured Tech:Mips
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Bike Helmets
Bike helmets are pieces of safety equipment designed to protect your head in the event of a fall or crash. They consist of an outer shell and interior protective liner made of polystyrene foam to absorb impacts. Manufacturers have created a suite of technologies to improve safety like MIPS, designed to dampen rotational trauma.
Types of Bike Helmets
You'll want to choose the type of helmet that suits your style of riding:
- Road bike helmets are built to be lightweight, aerodynamic and ventilate to reduce sweat.
- Mountain bike helmets offer more coverage and come with an array of features like face protection and visors.
- Recreational helmets provide basic protection for casual riders.
- Kids' bike helmets are built for smaller heads.
If you're concerned about bike safety, also see our selection of bike lights, reflectors and mirrors.
More Considerations
Look for some important features as you pick your helmet:
- Ventilation: More vents increase wind flow, cooling you down.
- Visors: Some helmets have a sun visor built in to keep your eyes shaded.
- Face protection: Mountain bike helmets often have full face protection and a wraparound chin bar.
Bike Helmet Fit
Helmets should fit snuggly but not be uncomfortable. To get the right fit, first adjust the wheel or strap in the back. Then, buckle and tighten the chin strap. To test the fit, open your mouth wide. The helmet should press against the top of your head.
When to Replace your Helmet
Bike helmets are designed to absorb one impact. If you're been in any type of accident, it's best to get a new helmet even if it looks OK. Crash-free helmets should be replaced after five years as UV, weather and age can cause them to degrade.
Why Shop at REI
REI Co-op offers a 100% satisfaction guarantee. We carry helmets from top brands like Giro, Smith and Bern.