X Force Carbon Black Flag Full Face MX Motorcycle Helmet
The next evolution in motocross and off-road performance helmets, the LS2 X-Force was developed to redefine how the industry reduces rotational impact and utilizes new and existing technology. LS2’s X-Force... Read More
The next evolution in motocross and off-road performance helmets, the LS2 X-Force was developed to redefine how the industry reduces rotational impact and utilizes new and existing technology. LS2’s X-Force utilizes a strong, lightweight 9k carbon fiber, offering robust, unrivaled durability, allowing the helmet to distribute the force of an impact across the shell surface. LS2 has also added a high performance multi density EPS for state of the art impact management. The 3D laser cut, technical fabric comfort padding is fully removable and washable and keeps the rider fresh and comfortable whether racing or spending a day on the trails. The 9k carbon fiber shell, multi-density EPS, and the high performance, technical fabric liner, combine to create A.R.E.M., which stands for Advanced Rotational Energy Management. LS2’s technological advancements have once again proven that with A.R.E.M., there is no need to add a third party, rotational impact slip plane, to achieve the same, if not better results. The tests have proven that utilizing a combination of shell, EPS, and liner materials and design, A.R.E.M. is the way of the future. The LS2 Helmets X-Force makes high end, advanced technology look good and feel good, but will protect you when it counts.
- SHELL | Meets or exceeds DOT FMVSS 218 and ECE 22.06. 1300g,+/-50g. Sizes XS-3XL. Made from 9k Carbon. 4 Shells.
- COMFORT | Removable washable, technical fabric liner wicks moisture to keep you cool. 3D laser-cut cheek pads for all day comfort with no hot spots. Includes universal hydration tube to fit most hydration packs
- VISOR | Extra wide eyeport accommodates most modern goggles.
- SECURITY | Our most advanced MX helmet to date. The X-Force features AREM, Advanced Rotational Energy Management. Crumple zone channels in EPS for additional energy management. Emergency release cheek pads. Adjustable and retractable safety release peak.
- VENTILATION | Massive multi-port dynamic, flow through ventilation with channeled EPS to keep you cool, while acting as an additional crumple zone for added safety
How to measure
Measure the circumference of your head with a tape measure, starting above the ear, circling completely around about half an inch above the eyebrows and across the fullest part of the back of the head. Measure several times for accuracy. If you fall between two sizes, choose the larger; the helmet should be as snug as possible without causing pain.
LS2 Helmets size chart
| Size | Head circumference (cm) | Head circumference (inches) |
|---|---|---|
| XS | 53-54 | 20 7/8 - 21 1/4 |
| S | 55-56 | 21 5/8 - 22 |
| M | 57-58 | 22 1/2 - 22 7/8 |
| L | 59-60 | 23 1/4 - 23 5/8 |
| XL | 61-62 | 24 - 24 3/8 |
| 2XL | 63-64 | 24 3/4 - 25 1/4 |
| 3XL | 65-66 | 25 5/8 - 26 |
| 4XL | 67-68 | 26 3/8 - 26 3/4 |
Youth sizes
| Chart | Size | Head circumference (cm) | Head circumference (inches) |
|---|---|---|---|
| Rapid Mini (kids street full-face) | S | 47-48 | 18 1/2 - 19 |
| Rapid Mini (kids street full-face) | M | 49-50 | 19 1/2 - 19 3/4 |
| Rapid Mini (kids street full-face) | L | 51-52 | 20 - 20 1/2 |
| Gate Youth (youth MX) | S | 51-52 | 20 - 20 1/2 |
| Gate Youth (youth MX) | M | 53-54 | 20 7/8 - 21 1/4 |
| Gate Youth (youth MX) | L | 55-56 | 21 5/8 - 22 |
One official LS2 USA adult chart (XS-4XL) for all adult models; different head shapes may need a size up/down in a given model, and models use multiple shell sizes. Two model-specific youth charts (Rapid Mini street, Gate Youth MX) — they differ, use the right one per model.
Manufacturer sizing data · verified July 8, 2026