Troy Lee Designs A2 Mips Enduro / MTB Cycling Helmet

Cooler, Faster in a Protective Package
The trailblazing Troy Lee A2 is TLDs’ MTB 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.
Key Features:
- Aerospace filament reinforced shell liner
- Versatile lightweight all terrain design
- Dual density impact liner with co-molded EPS and EPP providing safety at multiple impact velocities
- MIPS rotational slip protection available
- 6 pressurising intake passages
- 7 rear vacuum vortex outlets
- Large front and rear air passages coupled with deep internal channeling for maximum airflow and cooling efficiency
- Multi purpose cam-lock adjustable stabilizer with +-20mm movement (60mm horizontal/20mm vertical)
- Large eyeport and side clearance for goggles or glasses
- Mutliple Glasses/Goggle configurations
- Extra plush comfort liner with hydrolytic foam and x-static fabric for quick dry moisture wicking performance
- Fixed side strap anchors for a no fuss perfect fit every time
- Slimline flexible stabilizer arms
- Anodized aluminium hardware
- TLD ultra breathable helmet bag with gear storage pouch included
- Accessory sticker kit and extra visor hardware included.
- Covered by 3 year warranty
Occasionally, without notice, manufacturers change product design and/or specifications.
Troy Lee Designs A2 Mips Size Guide
Size |
Centermeters |
Inches |
S/M |
54 - 56 |
21.25 - 22 |
M/L |
57 - 59 |
22.37 - 23.25 |
XL/XXL |
60 - 62 |
23.62 - 24.37 |
How to measure
To find the circumference of your head, place a tape measure in the centre of your forehead, wrap it around above your ears and around the back of your head. If there's a slight difference between two different sizes, always go for the tighter size.

Once you know the circumference of your head, see the available sizes shown on the product and select the appropriate one.
The majority of cycling helmets have some form of adjustment for size, usually in the form of a ratchet adjuster to tighten or loosen the straps, some helmets will also come with different thickness pads to further customise the fit.
Read our clothing size guide for more information on sizing.
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