A3 helmet in white
A3 logo in white

So comfortable you won't ever want to take it off. The A3 mountain bike helmet is a new standard in premium mountain bike helmets with luxurious comfort, patent-pending innovations in safety, ventilation that will you keep you cool on the longest climbs with comfort and coverage to protect on the sketchiest of descents. Highest possible score (5-STAR) from Virginia Tech helmet safety lab so you can feel confident in all conditions.

#A3NeverTakeItOff
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A3 back of helmet profile image
A3 back of helmet profile image
A3 back of helmet profile image
A3 side of helmet profile image
A3 top of helmet profile image
A3 top of helmet profile image
Tech details on the A3 helmets
Shell
Tech details on the A3 helmets
Impact Liner
Tech details on the A3 helmets - Mips
MIPS
Tech details on the A3 helmets - sweat guard
Sweat Management
Tech details on the A3 helmets
Comfort Liner
Tech details on the A3 helmets
Fit System
Tech details on the A3 helmets
Magnajust Visor
Tech details on the A3 helmets
Fidlock Buckle
Tech details on the A3 helmets
Side Strap Dividers
Tech details on the A3 helmets
Visor Screws
TLD A3 helmet logo in white

Tech Details

SHELL IMPACT LINER MIPS SWEAT MANAGEMENT COMFORT LINER FIT SYSTEM MAGNAJUST VISOR FIDLOCK BUCKLE SIDE STRAP DIVIDERS VISOR SCREWS

SHELL

Advanced layering 3-piece shell

BENEFITS

3-piece shell layup not only adds to the technical refinement aesthetic, it allows the helmet to have more design option but also allows different parts of the EPP/EPS to be laid in for additional safety.

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TLD A3 helmet logo in white

Tech Details

SHELL IMPACT LINER MIPS SWEAT MANAGEMENT COMFORT LINER FIT SYSTEM MAGNAJUST VISOR FIDLOCK BUCKLE SIDE STRAP DIVIDERS VISOR SCREWS

IMPACT LINER

Impact Energy Management EPP-lo speed / EPS-hi speed

BENEFITS

Patent pending safety that combines EPP low density impact foam for low-speed energy management / comolded with more firm EPS layer for high-speed impact protection

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TLD A3 helmet logo in white

Tech Details

SHELL IMPACT LINER MIPS SWEAT MANAGEMENT COMFORT LINER FIT SYSTEM MAGNAJUST VISOR FIDLOCK BUCKLE SIDE STRAP DIVIDERS VISOR SCREWS

MIPS

B-Series MIPS rotational brain protection system

BENEFITS

MIPS B-Series solution allows the TLD fit system to attach directly to the MIPS LFL vs other models where the fit system is anchored in a stationary position to the side of the helmet-this solution creates an optimal 360 degree fit and a helmet that fits perfectly can maximize the safety features built into the helmet.

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TLD A3 helmet logo in white

Tech Details

SHELL IMPACT LINER MIPS SWEAT MANAGEMENT COMFORT LINER FIT SYSTEM MAGNAJUST VISOR FIDLOCK BUCKLE SIDE STRAP DIVIDERS VISOR SCREWS

SWEAT MANAGEMENT

TLD Sweat Glide System

BENEFITS

Carefully designed Eva Foam that is installed via adhesive backing, behind the comfort liner along the front brow, directing sweat away from the eyes and optics. Helmet ships with this installed and an additional spare included.

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TLD A3 helmet logo in white

Tech Details

SHELL IMPACT LINER MIPS SWEAT MANAGEMENT COMFORT LINER FIT SYSTEM MAGNAJUST VISOR FIDLOCK BUCKLE SIDE STRAP DIVIDERS VISOR SCREWS

COMFORT LINER

2-piece Xstatic comfort liner

BENEFITS

Xstatic® liner for anti-microbial properties that is also quick to dry. The liner features precision cut lines for those who want to customize the fit of the helmet.

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TLD A3 helmet logo in white

Tech Details

SHELL IMPACT LINER MIPS SWEAT MANAGEMENT COMFORT LINER FIT SYSTEM MAGNAJUST VISOR FIDLOCK BUCKLE SIDE STRAP DIVIDERS VISOR SCREWS

FIT SYSTEM

TLD Micro Adjust 360° Fit System

BENEFITS

All new retention stabilizer for custom tuned fit, full 360 fit as the retention arms are integrated into the MIPS system. The new fit system also features wide grip arms that are cantilevered so they have built in suspension on the surface area of your head.

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TLD A3 helmet logo in white

Tech Details

SHELL IMPACT LINER MIPS SWEAT MANAGEMENT COMFORT LINER FIT SYSTEM MAGNAJUST VISOR FIDLOCK BUCKLE SIDE STRAP DIVIDERS VISOR SCREWS

MAGNAJUST VISOR

3-way Magnajust® visor with goggle stowage

BENEFITS

Patent pending magnetic adjust visor system, allowing you to easily stow your goggles on the upswing and upon putting your goggle back on-the visor will automatically click back into position via the Magnajust ® system.

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TLD A3 helmet logo in white

Tech Details

SHELL IMPACT LINER MIPS SWEAT MANAGEMENT COMFORT LINER FIT SYSTEM MAGNAJUST VISOR FIDLOCK BUCKLE SIDE STRAP DIVIDERS VISOR SCREWS

FIDLOCK BUCKLE

Custom 3D Fidlock® magnetic buckle

BENEFITS

Fidlock® magnetic buckle for easy on and easy off, 3D molded TLD badge on surface.

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TLD A3 helmet logo in white

Tech Details

SHELL IMPACT LINER MIPS SWEAT MANAGEMENT COMFORT LINER FIT SYSTEM MAGNAJUST VISOR FIDLOCK BUCKLE SIDE STRAP DIVIDERS VISOR SCREWS

SIDE STRAP DIVIDERS

V2 adjustable easy set harnesses

BENEFITS

New side adjusters that are very easy to adjust forward and back but also up and down the side of your head for optimal comfort.

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TLD A3 helmet logo in white

Tech Details

SHELL IMPACT LINER MIPS SWEAT MANAGEMENT COMFORT LINER FIT SYSTEM MAGNAJUST VISOR FIDLOCK BUCKLE SIDE STRAP DIVIDERS VISOR SCREWS

Visor Screws

Composite smart-shear screws with anodized washers

BENEFITS

Composite screws are made to shear on a severe impact

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Whats in the Troy Lee Designs A3 helmet box?
TLD A3 helmet logo in black

What's in the Box?

+ HELMET BAG

Protective drawstring helmet sock.

+ 2 SPARE SWEAT GLIDES

EVA foam that is installed via adhesive backing, behind the comfort liner along the front brow, directing sweat away from the eyes and optics.

+ SPARE LINER

Xstatic® liner for anti-microbial properties that is also quick to dry.

+ 2 SPARE VISOR SCREWS

Composite smart-shear screws with anodized washers.

+ TLD A3 STICKER KIT

15 sticker set sheet

+ SPARE VELCRO STRIP PACK

Velcro strips installed via adhesive backing, applied around inner shell and connected via Velcro to comfort liner.

Replacement parts for the A3 helmet
TLD A3 helmet logo in black

Replacement Parts

  • Replacement Visor

  • Comfort Liner

  • Sweat Glide

  • Retention System

  • Visor Screws

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A3 helmets - never take it off
TLD A3 helmet logo in white

Never Take It Off

So comfortable, you’ll never want to take it off.

TLD A3 helmet logo in white

The Ins and Outs

The ultimate guide to the all-new A3 Helmet including in depth tech features, unboxing and how to customize your A3 Helmet.

Pump For Peace - RED
Uno - BLK
Uno - BLK
Uno - CAMO BLUE
Uno - CAMO BLUE
Uno - GLOSS GREEN
Uno - GLOSS GREEN
TLD A3 helmet logo in white

Helmet Details

  • MSRP
    $220 USD
  • Weight
    440 G
  • Sunglass Fit
    Vast array of eyewear tested with conflict-free approved fit and goggle stowage
  • Coverage
    Our deepest coverage half shell
  • Size
    3 shell sizes for optimal fit
  • Category
    Full depth coverage MTB/Enduro/Trail Helmet
  • Extra
    Helmet bag, 2 spare sweat glides, spare liner
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