The overall rating is based on review by our experts. More information: FAQ
Safety4 / 10
Weight3 / 10
Features3 / 10
The comfort and sound insulation of the related helmet couldn’t be reviewed. For more information, see: FAQ
LS2 Stream (FF320) - Summary
Helmet TypeIt specifies the type of the helmet, such as full face helmets and modular helmets… However, full face helmets are the safest type of helmet in the world.
OriginSpecifies the country that the product belongs.
MaterialSpecifies the material type of the helmet.
WeightSpecifies the weight of the helmet. Even though a weight of 100 grams seems light, it creates a serious load coefficient, when factors like wind coefficient are added to this weight.
1 55 kg
Sharp RatingSharp is a company that was founded in 2007, which is controlled by the British Government and puts helmets through durability tests. They have always raised question marks as some models of upper class brands were given low ratings. Nonetheless, they are an independent institution that rates helmets by testing them all in the same way.
Snell CertificationSnell is a non-profit organization that was built in USA in the year of 1957. Snell tests are truly vigorous and challenging. Some models of the brands like Arai, Bell, Shoei, Hjc have passed this test. The number of helmets that could pass this test is limited. Snell standards are renewed in every 5 years.
Retention SystemIt is the chin strap of the helmet. They are categorized as Micrometric or Double D Ring. Double D Ring fastening system is the one that is being used in MOTOGP. It is present in professional helmets and it is the safest fastening system.
Visor LockIf you are planning on using your helmet while driving with a speed of 240km/s or more, we definitely recommend you to get a helmet with visor lock. Otherwise, the force applied by the wind may open the visor of the helmet.
PinlockPinlock is perhaps one of the greatest technologies. It completely prevents the fog on your visor that is caused by moisture, your breath or the cold weather. Your vision is never restricted. It is not provided with all helmets.
Emergency KitEmergency Quick Release System. It is the system for quickly removing the pad in case of emergency. By holding the hook below the pad, you can rapidly remove the pad.
Breath DeflectorIt is a fog preventing factor for the helmets that don’t have pinlock. Another benefit of it is that if you lift the visor while moving, the wind won’t make breathing more difficult.
Glasses GrooveThis means you can use glasses with this helmet.
Internal Sun VisorIt is the black visor on the helmets that looks like sunglasses and they are provided with UV filters. They can be opened or closed. You can think of it as wearing sunglasses.
Speaker PocketsIntercom is a device that connects via Bluetooth. Intercom dock is where the earphones of this device are placed. By connecting your intercom device with your phone, you can make a phone call, listen to music or connect with other intercom devices while driving. You don’t need to wear an additional earphone or another device.
Chin Wind CurtainIt is one of the features that affect both isolation and comfort, since the helmets usually get wind from below.
Inflatable Cheek PadCheek pads of all helmets are flexible. You can see plenty of complaints about the helmets that were purchased a size bigger without considering the possibility of getting loose. This feature allows adjusting the pads according to your head without needing any other material, thanks to its air pumps that are located inside the helmet as a button.
Removable Cheek PadIt means that the cheek pads of the helmet are removable.
Washable Cheek PadIt means that the cheek pads are washable. It is important for hygiene.
Noise InsideThe helmet's ability to reduce noise, to minimise the wind resistance and to encourage ventilation inside the helmet was assessed in a wind tunnel at a simulated riding speed of 100 km/h. The helmet was fitted on a mannequin designed for acoustic measurement. The mannequin was equipped with a specially designed microphone placed inside one of the mannequin's pinnas (ears). The wind resistance was measured using the force plate which is part of the wind tunnel and the ventilation was measured by measuring the pressure drop on the face and crown areas of the mannequin.