Brand: HJC Helmets
Category: Full Face Motorcycle Helmets
  • Materials: Polycarbonate
  • Weight: 1 50 kg
  • Sharp Rating: 5 Star
  • Emergency Kit: X
  • Speaker Pockets: X
  • Detailed information is below:

Our Rating

More information: Q&A

  • Safety 8 / 10
  • Weight 4 / 10
  • Features 4 / 10

In the review article below, in addition to physical review, user reviews from different countries are added to noise and visor sections to provide general information.  Blue coloured texts contain redirection links and new tab will be opened when you click on these links.

South Korean helmet manufacturer HJC manufactured IS-17 series with 1.50 kg (medium size) weight from polycarbonate material. Precision scales 1.624 kg Average from 3 size L helmets.


hjc is-18 safety rating

Image/Test Copyright Sharp | HJC IS-17 @8.5m/s

This model is tested in Sharp laboratories and received 5 stars. Important factor other than stars is impact zone diagrams which is colours. Frontal bone, coronal suture, parietal bone, lambdoidal suture regions have passed this test with green while squamous suture and temporal bone regions passed the test with yellow colour. HJC IS-17 has ECE REG 22.05 safety certificate.  Every helmet that passes Sharp test has this certificate.

This model does not have Snell test certificate which includes harder tests. Helmets that can pass Snell test are rare. see also: snell certified helmets

HJC IS-17 can keep up with developing technology in security with double-d ring chin strap system and visor lock system.


If we generalise user reviews for HJC IS-17, we can rate isolation of this helmet as 1.8 over 15. You should not be surprised with different reviews. This is because we all have different hearing, riding style, motorcycle types. We all ride on motorcycle with different wind protection level and we all have different speeds. Wind tunnel test conducted by COAU at 100km/h identified noise level as 95.83 dBA and scores this helmet with 14.18 over 20. If noise level is an important criteria for helmet selection, we recommend taking dB levels of COAU as reference and see also: quietest motorcycle helmets


For air circulation, there are two ventilation channels on chin side, visor has one ventilation channels, two ventilation channels on the top, and four ventilation outlet channels on the back. All ventilation channels up to back side can be opened and closed. You can’t intervene with ventilation outlet channels on the back. As in some helmets, you cannot keep this ventilation channels at certain level. Aerodynamic structure of this helmet is rated 6.31 over 10 by COAU and ventilation structure is rated as 9.33 over 15 by COAU.


HJC IS-17 has pinlock. Therefore, visor fog will not be a problem. If we generalise user reviews for HJC IS-17, we can rate wide field of view of this helmet as 13.2 over 15. Wide field of view may be similar in most of the helmets but vertical field of view is rarely similar. Therefore, vertical field of view should be considered as this is an important element. When you take position especially on sport motorcycle, you need as much as vertical field of view to see in front of you clearly. We can say vertical field of view of HJC IS-17 is at medium level. Vertical field of view of this helmet is rated 2.66 over 5 by COAU and visor wind proof level is rated as 4.5 over 5 by COAU.

The black visor on images is not included in the product. Helmet ships with clear face shield only.


We can say that HJC IS-17 is designed for Intermediate Oval head structure and fitness of this helmet is at medium level. From outside, helmet will look neither larger nor smaller than your head.

Size chart on HJC website

hjc is-17 size


HJC IS-17 has breath deflector, glasses groove, chin wind curtain, removable and washable cheek pads.

This is all the information we will provide under overview. You can find the summary in summary tab, check user reviews tab for user opinions, add this helmet comparison list and find the right helmet for you with filtering system. 

HJC IS-17 is commonly compared with these helmets: AGV K3 SV | HJC FG-17 | SHARK SKWAL



Helmet Type It 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. Full Face
Origin Specifies the country that the product belongs. South Korean
Material Specifies the material type of the helmet. Polycarbonate
Weight Specifies 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 50 kg


Sharp Rating Sharp 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. 5 Star
Snell Certification Snell 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.
Chin Strap It 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. Double D-Ring
Visor Lock If 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.


Pinlock Pinlock 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. Included
Tear Off
Emergency Kit Emergency 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 Deflector It 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 Groove This means you can use glasses with this helmet.
Internal Sun Visor It 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 Pockets Intercom 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 Curtain It is one of the features that affect both isolation and comfort, since the helmets usually get wind from below.
Spesific Feature/s If “READ THE DESCRIPTION” is written below the specifications, it means that there is a specific situation about the helmet. It is recommended for you to visit the specific page of the helmet and read what is written under the “OVERVIEW” tab.


Safety 8
Weight 4
Features 4


Noise Inside The 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. 95.8 dBA / 100km/h
Ventilation Not Tested
Aerodynamics Not Tested
Vertical Field of View Not Tested

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