Bell Sixer MIPS MTB Helmet

Product Information

Integrated breakaway camera mount requiring no zip ties or tape, designed to break away upon impact to reduce the risk of injury

The Montaro II uses the same in-moulded construction as the original version, where the EPS and Roll Cage reinforcement is placed in the mould with the microshell and then bonded. The new version gets a new Roc Loc 5 Air MIPS – Giro combines the movable liner and retention device into a single part, which eliminates bulk and weight. Fusion In-Mould polycarbonate shell - A process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet.I have previously owned the Specialized Ambush MIPS helmet weighing in at just 278g for the size medium. The Sixer is 410g for the size medium so the weight difference was definitely something I had to get used to. Weight wise, the Ambush is unmatched in the category but I always questioned it’s reliability in a major crash. To boost impact protection, the Troy Lee Designs A3 uses a dual-density EPS core with in-moulded mixes of EPP (expanded polypropylene) and EPS (expanded polystyrene), all wrapped up into a polycarbonate shell. To help deal with rotational impacts, the A3 gets a B-series MIPS liner integrated into the shell.

Always at the forefront of helmet design, Bell’s Sixer brims full of tech and provides a superlatively comfortable fit. Varying densities of foam are used to build up the structure of the Sixer, each one optimised to absorb different impact velocities. Bell's built-in camera mount allows the portable action camera to be attached seamlessly and unobtrusively without the need for double-sided tape or cable ties. The detachable attachment fits perfectly into the ventilation opening at the top of the helmet, holds the camera in the ideal position and leaves no trace on the helmet after disassembly.

Key features of the best mountain bike helmets:

As part of a new wave of moto-inspired, open-face trail helmets, the Giro Tyrant Spherical provides significantly more head coverage than most of the standard mountain bike helmets we tested. Giro bills this beefy lid as a versatile option that can span the gap between gravity, trail, and dirt jump helmets. After weeks of rigorous testing, we support Giro's claim that it's an incredibly versatile helmet despite its heavy, protective construction. The first thing you'll notice when donning the Tyrant is that it shares a unique dual-shell construction with its half-shell counterpart, the Manifest. The inner shell is low-density EPP foam for minor impacts, and the outer shell is high-density EPS to absorb major collisions. Despite its double-shell composition, the helmet keeps a relatively low profile on your head, and the vents do a surprisingly good job of keeping things cool. Combine the innovative protection and coverage with Giro's Roc Loc harness system and refined shell shape, and you have a helmet that stays comfortable all day.