Troy Lee Designs – A3 Uno MIPS Helmet (MTB)

A3 Uno MIPS Helmet is a Troy Lee Designs mountain bike helmet built for trail riders. The A3 shape suits aggressive trail riding with an emphasis on day-long comfort and modern mountain bike coverage. It is shaped around dependable protection, ride comfort, and the clean finish Troy Lee Designs helmets are known for. The Uno treatment gives this helmet a more individual feel than a plain solid option. The MIPS-equipped build adds another layer of confidence for riders who prioritize modern helmet technology.

The fit is aimed at riders who need their MTB helmet to stay composed on technical descents while still feeling comfortable during transitions, climbs, and longer days outside.

Why We Like It: it fits the way a modern MTB helmet should: secure, ventilated, and ready for real terrain.

Why Itll Work for You: It works well for riders who split time between trail loops, enduro stages, and lift-served laps and want one mountain bike helmet that feels ready for all of it.

Variants / Options: multiple sizes and colorways available; check the selector for current stock.

Key Features:

• B-Series MIPS Rotational Brain Protection
• Advanced layering 3-piece shell
• 3-Way Magnajust visor
• TLD Sweat Glide System – EVA wicking foam
• Premium 3d Fidlock magnetic buckle system and composite smart shear screws