Headsets and Stems

Riding with a rattling or creaking headset can cause serious damage to the frame of your bike, and not to mention the problems you'll have trying to control your bike, especially at speed or over rough terrain. Purchasing a smooth, quality headset will hugely improve your bike's handling, and could also prevent serious damage to the frame of your bike, potentially saving you a lot of money further down the line. When purchasing a new bike headset, you'll need to identify whether you need an internal, external or integrated bike headset. There are also different sizes to choose from, with 1 1/8" being the most common. We stock a selection of traditional and tapered headsets, with the latter featuring heavily on both road bikes - opens in a new tab and mountain bikes - opens in a new tab. You also have the choice of threaded and threadless headsets for both mountain bikes and road bikes. All our headsets are brought to you by industry-leading brands, such as Fsa, Clarks, A2z, Aheadset and more.

Bike stems are available in a choice of stem length and angle, and are a great way to adjust your riding position while cycling. We have a great selection of bike stems for all types of rider, with mountain bikers preferring a shorter stem with a shorter reach for quickening their steering, and road cyclists opting for a stem riser to improve their riding position. If you're looking for a more upright riding position, say for commuters or hybrid bike - opens in a new tab owners, an angled or riser stem is the way to go. As with a bike headset, there are a few measurements to take into account. The first is your handlebar width to ensure you have the correct clamp size, and the second if the size of your steerer tube to make sure your new stem will fit.
And once you've found the products you love, use our convenient click & collect service to get a hold of them sooner. Alternatively, opt for delivery or head to your local Halfords store - opens in a new tab where one of our team will be happy to assist you with your new purchase. Need advice on how to adjust a headset - opens in a new tab? No worries, see our complete video guide online.

Bike headsets, stems & handlebar extensions FAQs

Are bike stem risers safe?

Yes, bike stem are safe if fitted and used responsibly. They're ideal for riders who prefer a more upright, comfortable riding position, such as commuters and hybrid bike users. We stock a variety of stem risers here at Halfords to suit different types of bicycles, and our friendly staff can help ensure that you purchase the right fit for your set-up.

What is a bike headset​?

A bike headset is the component that connects the front fork and the frame of the bike and allows the turning of the fork and handlebars in a smooth, seamless way. There are different kinds like internal, external, and integrated headsets, and sizes such as the common 1 1/8 inch. A well-maintained headset guarantees safe steering and handling of the bike. One can pick from a range of quality headsets for bikes at Halfords.

How do you measure a bike stem?

The measurement most riders look at is the distance from the centre of the handlebar clamp to the centre of the steerer tube clamp. If you're replacing a stem, a quick look at the markings on the current one can often save you getting the tape measure out.

Are all bike stems the same size?

Definitely not. Bikes can use different clamp diameters, steerer tube sizes and stem lengths. That's why it's always worth checking the specs before ordering a replacement.

How long should my bike stem be?

A stem that feels perfect on one bike might feel completely wrong on another. If you feel too stretched out or too cramped when riding, that's usually a sign that a different stem length could suit you better.

How to tighten bike headset?

To tighten bike headset, first loose the stem bolts, and then gently tighten the top cap until the play is gone but steering still moves freely. Evenly re-tighten the stem bolts to the recommended torque. Not sure? Get Halfords to help you with headset and stem adjustments.

What headset fits my bike?

The right headset and stem depend on your bike’s frame size, fork steerer tube and head tube. Check the specs of your bike or measure your current headset before purchasing. The right size means smooth steering and a secure fit.

Do bike headsets make a difference?

Yes, a good headset and stem make for smoother steering, better control and improved handling. A well-maintained headset also reduces play, and keeps everything aligned so your bike’s frame and fork will last longer.

Are all bike headsets the same size?

No. Bike headsets are available in different sizes and standards, threaded and threadless, etc. If you buy new headset and stem make sure they are the right measurements for your frame and fork, otherwise you will be having trouble.

When to change bike headset?

If your steering is rough, there’s persistent looseness, worn bearings or rust or damage that can’t be rectified through adjustment, it’s time to ditch your bike headset. Replacing a worn headset and stem as needed keeps your steering safe and responsive and your ride comfortable.