HJC IS-17 Lorenzo Helmet

HJC IS-17 Lorenzo Helmet
HJC IS17 Lorenzo Helmet - Black HJC IS17 Lorenzo Helmet - White HJC IS17 Lorenzo Helmet - White Rear View
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Infinity Price: £170.99 RRP £179.99 Save 5% = £9.00 Save 5%

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HJC IS-17 Lorenzo Motorcycle Helmet:

The IS-17 offers HJC’s standards of great performance and protection for a fantastic price. The outer shell of the helmet is made from advanced polycarbonate which keeps the helmet lightweight whilst still providing fantastic protection. The IS-17 was designed through CAD technology which gives it a fantastic comfortable fit.

Internal cheek pads are available in various thicknesses so you can find a size perfect for you to give the helmet an even more personalised fit. The interior material is anti-bacterial for a more comfortable ride and is also designed to wick moisture. This interior is also removable and washable.

The Advanced Channelling System (ACS) is designed to keep you cool even if the temperature increases. This channelling system will let in fresh cool air and evenly distribute it through the helmet and over your head. To avoid the helmet becoming stuffy the rear ventilation will exhaust the used warm air.

The HJC IS-17 is a great helmet delivering fantastic protection and performance without compromising comfort. All of this and a fantastic price.


  • Outer shell designed using CAD technology and constructed from advanced polycarbonate for a protective and lightweight helmet in a comfortable fit
  • Various sized internal cheek pads so you can find a size perfect for you
  • Anti-bacterial and moisture wicking fabric interior which is removable and washable
  • Cheek pads are also removable and washable
  • Integrated sun visor can be conveniently operated with one-touch even with gloves on; and gives great coverage and UV protection
  • Advanced Channelling System (ACS) distributes fresh air into the helmet and evenly distributes it around the helmet then exhausts it out keeping the helmet cool and comfortable

Since 1971, HJC has specialized in manufacturing motorcycle helmets exclusively. The combination of this extensive specialized manufacturing experience, innovative ideas, and reasonable pricing resulted in HJCs success in worldwide markets. It is HJCs continual goal to provide high quality, comfortable, and reasonably priced helmet to motorcyclists around the world.

HJC produce high end, mid, and entry level products to satisfy the high demands of consumers worldwide. The R-PHA 10 helmet is being worn by professional racers including 2011 Moto GP Factory Yamaha racer Ben Spies (2006, 2007, 2008 AMA Superbike Champion, 2009 World Superbike Champion). The R-PHA 10 helmet offers extremely light weight for rider comfort. In addition, to the R-PHA 10 the new IS Series have an interior sunshield system that have been one of the bestselling helmets in the marketplace.

It is clear that HJC continues to be a brand that is friendly to motorcyclists around the world providing safe, comfortable, stylish and affordable helmets.

HJC Helmet Sizing

The following sizing guides are intended as a general guide only.

If you need any further help with sizing please do not hesitate to contact us or visit any of our stores.

Helmet size is measured around the circumference of the head starting in the middle of the forehead. Start around 1 cm above the eyebrows then around the head just above the ear then back past the opposite ear to the start point.

The fit should be a snug fit when new, as the inner comfort liner will give out between 5%-10%.
A loose fitting helmet will not protect the head correctly in the event of an accident.
Measurement should be taken in centimetres please refer to the conversion chart below.

Helmet Size Chart

CM 51/52 53/54 55/56 57/58 59/60 61/62 63/64

Next, follow these fitment checks.

  • With the helmet on and the chin strap fastened, shake your head side to side. If the helmet moves independently of your head then the helmet is too big. The helmet lining and cheek pads should be in direct contact with your skin. While shaking your head, your skin should move with the helmet.
  • Place one hand on he back of the helmet and push forward. Use your other hand and try to slip your little finger between your forehead and the helmet lining through the visor aperture. If there is room for more than just the tip of your finger, the helmet is too big.
  • Lastly, place one hand on the chin bar and push up (while the chin strap is secured), if the helmet comes off your head, it is too big. Next, place one hand on the back and push up again, if the helmet rolls off of your head, it is too big.

Delivery Costs.

To find the delivery costs for an item simply place the item in your basket. Our delivery costs for most items are based on each item's size and weight. Delivery and handling estimates that appear in the basket are calculated with our lowest cost delivery method.

Free Shipping on Orders Over £25

Orders to UK Mainland addresses over £25 (i.e. excluding Highlands and Islands) will be sent with free carriage.

Free Shippping To Other Destinations.

Orders will be shipped free of charge to areas other than the UK when the order total is over:
UK Highlands and Islands: £100
Europe Zone 1 - e.g. Eire, France, Germany £250
Europe Zone 2 - e.g. Greece, Poland £400
USA, Canada, Australia - £800
Items Shipped outwith the EU will include a form which can be used to claim back approx 10% V.A.T. Unfortunately this excludes BFPO addresses. Please note, V.A.T. is not applied to crash helmets.

Delivery Times

We aim to deliver UK Mainland orders in 3-5 working days, however if we have to place a supplier special order, delivery may be slightly longer. If the item ordered is out of stock we will contact you with the option to wait, choose an alternative or cancel the order.


Delivery of orders is by DPD or Royal Mail, all methods will require a signature for proof of receipt.

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