Leatt have added a convertible full face helmet to their range of protection; the Twenty21 4.0 Enduro Helmet. With a removable chinbar, 360° Turbine Technology, FIDLOCK real estate and DH-certified safety ratings, the Leatt 4.0 offers everything you’d need (and more) out of both a full face and open-face enduro helmet.
Leatt Twenty21 4.0 Enduro Helmet
If you’re in the market for two-helmets-in-one, the Leatt 4.0 Enduro Helmet has to be a strong contender. Like many brands before them, Leatt are appreciating the versatility of a removable chin bar, showing that DH-level protection can be engineered into a convertible full face helmet.
We’ve seen numerous ways of doing this. The MET Parachute MCR uses a FIDLOCK magnetic clip system to install the chinbar, the Bell Super DH uses a quick release lever, while the Giro Switchblade uses a push-button release, all tool-free systems. The new Leatt 4.0 Enduro Helmet also offers a tool-free system in the form of a solid stainless steel latch.
Many of the aforementioned convertible full face helmets are easily converted from full- to open-face mode (and vice-versa) while positioned on the rider’s head. Leatt’s imagery shows their pro athletes switching between modes with both pieces of their helmet in their hands.
Packed into its lightweight polymer shell, the Leatt 4.0 enduro helmet houses their proprietary 360° Turbine Technology. This is a rotational impact protection system that works in a similar fashion to the more well-known MIPS system. Leatt say it can reduce peak brain acceleration by up to 30% at impact speeds associated with concussion and reduce peak brain rotational acceleration by up to 40%.
The in-molded EPS and EPP impact foam manages energy absorption during impacts. Of course, a helmet from Leatt is always going to be compatible with neck braces for big days in the bike park.
The Leatt 4.0 Enduro helmet features a three-position visor, underneath which a set of MTB goggles can be stowed. The helmet can also stow your sunglasses here, thanks to ports built into the ventilation channels. The visor itself is said to break away in the event of a direct impact, reducing its risk of transmitting rotational forces to the head and brain.
The helmet features 18 vents in total, said to provide good ventilation at both high and low speeds. The inner liner is breathable, moisture-wicking, and treated with anti-odor compounds. When it eventually gets overwhelmed, it can be removed, washed and replaced.
Finally, the chinstrap is finished with a FIDLOCK magnetic closure system which allows for a secure and easy fit, even with gloves on (and one-handed).
Pricing & Availability
The Leatt 4.0 Enduro Helmet retails at $299, and the same number of euro. If a removable chin bar is not what you are looking for, fear not. The Leatt 4.0 enduro is also available as an all-mountain helmet (open-face mode only), retailing for $189 or 189€. Both will be available in stores from 25th January (region dependent).
The helmet is AS/NZS 2063:2008, ASTM F1952–10, EN1078 and CPSC 1203 Certified and Tested.
