Troy Lee Designs A2 MIPS Helmet (Decoy Black) (XS/S)

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Troy Lee Designs A2 MIPS Helmet (Decoy Black) (XS/S)
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Price: $90.00

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The trailblazing A2 is Troy Lee Designs mountain bike trail helmet that checks all the boxes. Its stylish shell not only incorporates huge intake and exhaust ventilation ports, but it also comes with the very best in impact protection. From breakaway visor screws and the innovative MIPS® system and an industry-first dual-density EPP + EPS liner that protects against both high and low-speed impacts; this is a helmet that doesn’t take your safety lightly. Add in an adjustable strap and X-Static Pure Silver comfort liner and the comfort is every bit on par with the protection.


  • Huge air intake vents (25% larger than the A1) connected to massive exhaust ports provide powerful all day cooling efficiency
  • MIPS technology reduces the rotational forces to the brain in the event of an impact
  • Dual density EPS liner co-molded with EPP for state of the art impact energy management for both high and low energy impacts
  • Rear stabilizer fit system uses slim arms for a barely noticeable fit
  • Adjustable strap dividers ensure a perfect fit every time you put it on your head
Fit System: Dial Closure
Ventilation: 13 Vents
Safety Features: MIPS
Color: Black
Weight: 400g (M/L)

This product was added to our catalog on March 7, 2017

Brian Cagle
Verified Owner
Thursday, Aug 18 2022 (about a year ago)
Troy Lee Designs A2 MIPS Helmet (Decoy Black) (M/L)
This is my second Try Lee MTB helmet. I had a pretty hard crash that resulted in a head impact. Other than being slightly dazed (for 5 seconds) and a bit of a headache, my head was perfectly fine. If I wasn't wearing a helmet, I'm pretty sure I would have been in trouble. While any quality helmet will protect one's head, I especially like the Try Lee helmets. The fit is perfect (for my head), they have really good ventilation, they look cool, they're exceptionally well made and they don't rotate forward as I ride like other helmet brands I've tried. I bought my first Troy Lee last year. After the head impact, I thought it wise to replace the helmet. I'm confident I'll stick with Troy Lee MYB helmets, now.

Helmet Measurements:

  • Measure circumference of head using fabric tape measure
  • Measurement should be taken just above eyebrows and ears: Approximately 1" (25mm)
A1Hat SizeCircumference (in)Circumference (cm)
Universal Youth6 - 6-3/4"19 - 21-1/4"48 - 54cm
S6-3/4 - 7"21-1/4 - 22"54 - 56cm
M/L7-1/8 - 7-3/8"22-3/8 - 23-1/4"57 - 59cm
XL/2XL7-1/2 - 7-3/4"23-5/8 - 24-3/8"60 - 62cm
A2Hat SizeCircumference (in)Circumference (cm)
S6-3/4 - 7"21-1/4 - 22"54 - 56cm
M/L7-1/8 - 7-3/8"22-3/8 - 23-1/4"57 - 59cm
XL/2XL7-1/2 - 7-3/4"23-5/8 - 24-3/8"60 - 62cm
A3Hat SizeCircumference (in)Circumference (cm)
XS/S-20-7/8 - 22"53 - 56cm
M/L-22-3/8 - 23-1/4"57 - 59cm
XL/2XL-23-5/8 - 24-3/4"60 - 63cm

Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.