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Troy Lee Designs



Regular price $444.95 AUD
Regular price Sale price $444.95 AUD
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The Troy Lee Designs A3 Sideways MIPS helmet is at the pinnacle of all-mountain bike helmet innovation, comfort and safety. The tried and tested design of the TLD A2 MIPS Helmet has been re-engineered to increase comfort without sacrificing class-leading protection or its lightweight design. This is a helmet that performs in style!

Featuring the next-gen MIPS liner, the A3 Sideways MIPS Helmet offers increased protection upon impact, especially against rotational forces. If you weren't sure about how safe the TLD A3 Sideways MIPS Helmet really was, it meets Virginia Tech's perfect 5-star rating, giving you the confidence to keep pushing your limits!

The TLD A3 Sideways MIPS Helmet improves on the design of the A1 MIPS Helmet, by increasing airflow by more than 25%! This is all thanks to a redesigned ventilation system with larger vent ports and a more efficient air channel system. Taking advantage of pressure differentials to create a vacuum, the A3 Sideways MIPS helmet draws air in before expelling it. Ultimately, this results in heat being drawn away from your head so you can go all day while keeping your cool. 

With the increased ventilation, it's surprising that TLD was able to increase the frontal protection of the A3 Sideways. However, that's just what they've done! It features TLD's patent-pending EPP in the frontal section to really ensure your noggin is protected no matter what. If you've never heard of EPP before, that's because it's an all-new innovation from Troy Lee Designs! It's the first dual-density EPS impact liner, and increases protection by 16%!

In addition, the A3 Sideways MIPS Helmet features the all-new TLD Sweat Glide System, which uses EVA foam to keep sweat away from your brow. The adjustable Magnajust Visor will ensure you'll always have a clear view ahead, regardless of the elements. While a premium Ionic 2-piece comfort liner ensures a plush and dry ride thanks to its anti-microbial and sweat-wicking properties. Finally, the 3D FIDLOCK Buckle will keep the A3 Sideways MIPS Helmet firmly strapped to your head, whether the terrain is rough, or you've just landed a big jump! The Troy Lee Designs A3 Sideways MIPS helmet prioritises comfort without sacrificing your safety.

If you're looking for an open face MTB helmet that really performs, all while remaining comfortable in Australia's hot and humid conditions, then look no further than the Troy Lee Designs A3 Sideways MIPS helmet.


  • Ventilation: 16 high flow ports with huge inlets to provide maximum ventilation for your head, increases ventilation by 25% compared to the TLD A1 Helmet
  • MIPS: Next-generation integrated liner reduces the effects of rotational forces during impact
  • Protection: Reinforced polycarbonate shell in-moulded with an EPS liner offers maximum protection and durability
  • EPP Liner: Industry-leading design, offers dual-density EPS liner in the frontal section, increasing coverage by 16%
  • Perfect Fit: Triple position adjustable retention system allows customised fit for various eyewear, head shape and riding styles
  • Comfortable: 2-Piece Ionic Comfort Liner is an anti-microbial and moisture-wicking material, offering an ultra-plush ride
  • Visor: Low-profile, semi-adjustable visor provides protection from the wind, rain and sun
  • 3D FIDLOCK Buckle: Magnetic system ensures a secure fit in all conditions


  • Construction: Reinforced polycarbonate shell with EPS, EPP and MIPS liners
  • Ventilation: 16 maximum flow vents
  • Adjustable: Cam-Lock Strap Dividers
  • Certification: CPSC 1203, CE EN1078, AS/NZS 2063:2008
  • Weight: 375g (M/L)
  • Colour: Black
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