Confidence for gravity-fuelled riding. The Lazer Chase KinetiCore is a lightweight full-face mountain bike helmet built for downhill and enduro riders who demand certified protection without sacrificing comfort. ASTM 1952 downhill-certified and rated five stars by the Virginia Tech helmet lab, it's purpose-built for bike park laps, DH racing, and aggressive trail descents.

Highlights

• KinetiCore rotational protection: Controlled crumple zones are integrated directly into the helmet shell to absorb both direct and rotational impact forces — no add-on liner, no extra bulk.
• ASTM 1952 downhill certified: Meets the highest full-face protection standard in the sport, approved for downhill racing and aggressive enduro riding.
• Breakaway visor: Engineered to separate cleanly on impact, reducing rotational force to the head and neck in a crash.
• Double D-ring closure: Battle-tested buckle system delivers a secure, rattle-free fit that stays locked in across rough terrain.
• 11 ventilation channels: Generous airflow for a full-face lid, keeping you cool on climbs and long shuttle laps.
• Neck brace compatible: Designed to work with leading neck brace systems for riders who want maximum protection.
• Plush sweat-wicking liner: Removable and washable padding for a comfortable, hygienic fit all day long.

KinetiCore technology

KinetiCore is Lazer's integrated rotational impact protection system — built into the helmet's EPS structure from the ground up rather than bolted on afterwards. When you crash, the controlled crumple zones deform in a managed way to dissipate both the linear and rotational forces that cause brain injury. The result is a helmet that's lighter and simpler than MIPS-equipped alternatives while delivering independently verified top-tier protection.

Built for the descent

At approximately 990 g (size M), the Chase KinetiCore sits at the lighter end of DH-certified full-face helmets. The flexible front grid guards against mud and debris, while the deep chin bar and full EPS coverage give you the confidence to commit on steep, technical terrain. The breakaway visor reduces the risk of the helmet being wrenched during a tumble, and the neck brace-compatible geometry means you can layer up your protection system as required.

Compatibility & fit

Size XS fits head circumferences of 52–54 cm. Measure the widest part of your head (approximately 2.5 cm above your eyebrows) and refer to the Lazer size chart before ordering. Certifications on this variant: AS/NZS (Australian standard), CE (EN 1078), CPSC, and ASTM 1952 downhill. Always replace a helmet after any significant impact, regardless of visible damage.