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mountain bike helmets

Bike Helmet Guide

How to choose the best helmet for you

A bike helmet is the most important bike accessory you'll own. Whilst it's not against the law to ride without one, we highly recommend you do. Wearing a tough helmet can be the difference between a bump on the head and a concussion – or worse.

If you have been unfortunate to have 'used' your helmet in an accident then you should replace it, as any cracks and dents will compromise durability.

Every bike helmet we sell meets the required European Standard (EN 1078) for safety. The you spend on a helmet the lighter, more comfortable, better vented and easier to adjust it will be. Premium helmets will offer specific features such as aero profiling to improve performance.

What type of helmet do I need

road bike helmets

Road Helmets

Road bike helmets are lightweight and come with plenty of venting to keep you cool when you’re pounding the tarmac.

High-end road helmets come with slick aero profiling to minimise drag and improve your performance.

mtb helmet

MTB Helmets

Mountain bike helmets are more durable with a thicker shell design and come with good venting. You’ll find extended protection around the side and rear of your head for maximum protection.

Most MTB lids come with a removable visor to protect against glare and debris.

full face helmets

Full Face Helmets

Full Face helmets offer the ultimate protection for downhill mounting biking. A chin guard helps to keep your lower face shielded.

skate helmets

Skate Helmets

Skate helmets come with minimal venting in favour of a hardshell design offering side and rear protection. These stylish helmets are great for the skatepark or pump track.

urban helmets

Urban Helmets

Urban helmets blend features from road and MTB helmets with added visibility for safety. Urban helmets with integrated LED lights and reflective logos are ideal for commuting.

How do I get the right size helmet?

First, it’s best to measure the circumference of your head so you have a better idea of the right size you need.

1. Place a tape measure in the centre of your forehead

2. Wrap around your head just above your ears

3. Make sure the tape crosses the occipital bone (bump at the back of your head)


Helmet sizing

Not all brands follow the same sizing on their products. However, you can use our helmet size chart as a good guideline.

If you’re between sizes it is generally recommended to opt for the smaller as it’ll be snug and offer a more secure fit.

Head size

Small – 51 – 57cm
Medium – 54 – 60cm
Large – 57 – 63cm

Sizing is for guidance only. Sizing may be different between brands & products.

measure your head size

Should I get a helmet with MIPS?

MIPS is a fairly new technology designed to improve safety in a crash. A low friction layer is inserted into the helmet which moves around during rotational impacts. 

This movement absorbs and slows energy between transferred to your head to reduce the risk of brain injury. This is a feature we expect will trickle into more and more helmets.

What is Crash Replacement?

Many manufacturers will offer a Crash Replacement policy. If you’re helmet has been involved with a crash, you can buy a replacement at a reduced rate. Often crash replacement is available if your helmet is up to 3 years old and you’re a UK resident.

Check with the manufacturer or supplier of your helmet to see if you’re eligible for a discount.

Kask Helmets

You can return your damaged helmet to the UK Kask supplier (Velobrands LTD) in return for a replacement model at 50% RRP.

Simply email kask@velobrands.co.uk or return your damaged helmet to:

  • Velobrands Ltd
  • Copplestone Mill
  • Copplestone
  • Crediton
  • EX17 5NF

Please include your name, phone number, email address and proof of purchase. You will be contacted to arrange payment of your replacement and shipping.

Giro Helmets

You can return your damaged Giro helmet to the UK supplier Zyro for a replacement at a reduced rate. Email customer.services@zyro.co.uk with the following information:

  • A picture of the damaged helmet
  • A covering letter detailing the information of the accident
  • Proof of purchase of the damaged helmet
  • Details of which replacement helmet you would like. (Model, size and colour)
  • Your Full Name and address
  • Contact Telephone Number

You will be contacted to arrange the order of your replacement helmet. Your helmet will be dispatched within 7 working days.

To participate in the scheme you must have purchased your helmet within the last three years from one of our UK or Irish Retailers and be a resident in the UK or Ireland.

Please note not all helmets are eligible, see below for eligible helmets:

Bell Helmets

You can return your damaged Bell helmet to the UK supplier Zyro for a replacement at a reduced rate. Email customer.services@zyro.co.uk with the following information:

  • A picture of the damaged helmet
  • A covering letter detailing the information of the accident
  • Proof of purchase of the damaged helmet
  • Details of which replacement helmet you would like. (Model, size and colour)
  • Your Full Name and address
  • Contact Telephone Number

You will be contacted to arrange the order of your replacement helmet. Your helmet will be dispatched within 7 working days.

To participate in the scheme you must have purchased your helmet within the last three years from one of our UK or Irish Retailers and be a resident in the UK or Ireland.

Please note not all helmets are eligible, see below for eligible helmets:

Bern Helmets

The Bern Helmet Crash Replacement scheme allows you to purchase a replacement Bern helmet at a reduced price following a crash.

All transactions are made through the Bern Distributor, Ultra Sport Europe.

To be eligible you must supply proof of purchase, and have bought the helmet within 3 years. Please contact Ultra Sport customer service at info@ultrasporteu.com with the following information:

  • Model and size of helmet damaged
  • Photographs of the helmet clearly showing the damage
  • Detailed information about the crash and damage to the helmet
  • Original proof of purchase
  • Details of shipping and billing address for replacement helmet

You will be contacted to confirm your replacement and arrange payment. You can call Ultra Sport on 01332 813150.

Lazer Helmets

The Lazer Crash Replacement Programme is available only to customers that are resident in the UK & Ireland and purchased their helmet from a UK or Irish dealer. A helmet up to three years old can be replaced at a reduced price, if it has been involved in an accident. The replacement will always be the same model as the original or the nearest current equivalent if the original is no longer available.

The customer must first contact the Madison Warranty & Technical department to obtain a returns number, and then send in the following:

  • The old helmet
  • Information about the accident
  • Proof of purchase of the old helmet
  • A cheque or postal order made payable to Madison, a division of H. Young Operations Ltd for the appropriate amount (see charges below)

Prices are subject to change from time to time, a full list of the most up to date replacement costs can be found below:

These should be sent by the customer directly to:

Madison Customer Care Department, Madison Distribution Centre, Alston Drive, Bradwell Abbey, Milton Keynes, MK13 9HA. Tel: 01908 326032.

Madison will send the new helmet directly to the customer.

Most Popular Helmets