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Towbar-mounted bike racks are a popular choice for families, cyclists and anyone who wants to carry bikes safely without lifting them onto the roof of a vehicle. They are usually easier to load, more stable, and often more practical than roof-mounted bike carriers.
But before you buy a towbar bike rack, you need to make sure your vehicle has the right towbar and electrics fitted.
The best towbar for a bike rack depends on your vehicle, the type of bike rack you want to use, whether your vehicle has parking sensors, and whether you need a fixed or removable towbar.
👉 Read our simple towbar guide
A towbar-mounted bike rack attaches to the towball at the rear of your vehicle. This keeps the bikes lower to the ground, making loading and unloading much easier than using a roof rack.
Towbar bike racks are useful for:
They can also be a better choice if you do not want to lift bikes onto the roof, or if your vehicle is too tall for roof-mounted carriers.
However, the rack needs a suitable towbar, and in many cases it will also need electrics for the bike rack’s lights and number plate board.
Not always. Many towbar-mounted bike racks are designed to fit standard towballs, but compatibility can vary depending on the rack and towbar type.
Some bike racks clamp directly onto the towball. Others may have specific requirements around towball shape, clearance, or the type of towbar fitted.
Before choosing a towbar, it is worth checking the bike rack you plan to use. If you already own a rack, check whether it is compatible with fixed flange, swan neck or detachable towbars.
If you have not bought a bike rack yet, it is better to choose your towbar and rack together so you know they will work properly.
A fixed towbar stays permanently fitted to the rear of the vehicle. This can be convenient if you use your bike rack regularly because the towbar is always ready.
There are two main fixed towbar styles: fixed flange and fixed swan neck.
A fixed flange towbar uses a towball bolted onto a faceplate. It is a traditional and versatile option, often used on vans, pickups and practical towing setups. Some accessories are designed to work well with flange-style towbars.
A fixed swan neck towbar has a slimmer, neater design. It is common on modern cars and is often suitable for towball-mounted bike racks.
A fixed towbar can be a good choice if you regularly carry bikes and are not worried about the towbar being visible when the rack is not fitted.
A detachable towbar allows you to remove the visible towbar neck when you are not using it. This is a popular choice for drivers who want the benefits of a towbar without changing the look of the vehicle every day.
For bike rack use, a detachable towbar can be ideal if you only carry bikes occasionally. You attach the towbar neck when needed, fit the bike rack, and remove the neck again afterwards.
A detachable towbar may also be a better choice if your vehicle has rear parking sensors. Because the towbar neck can be removed when not in use, it reduces the chance of the sensors detecting the towbar during normal reversing.
The main downside is that detachable towbars usually cost more than fixed options. You also need to store the removable neck safely when it is not in use.
Swan neck towbars are often a good option for bike racks because they have a neat, simple towball design. Many modern towbar-mounted bike racks are designed to work with swan neck style towbars.
A fixed swan neck towbar is always in place, while a detachable swan neck towbar can be removed when not needed.
If you want a clean look and good compatibility with many modern bike racks, a swan neck towbar is often worth considering.
Many towbar-mounted bike racks need electrics because the bikes may cover your vehicle’s rear lights or number plate. In that case, the rack usually has its own light board and number plate holder.
The electrical connection powers the bike rack’s lights, including indicators, brake lights, side lights and fog lights.
The two most common socket types are:
A 7 pin socket is often enough for basic lighting on many bike racks. A 13 pin socket may be required for newer racks or if you want better long-term flexibility.
If you already own a bike rack, check whether it has a 7 pin or 13 pin plug. If you are still choosing a rack, it may be worth considering a 13 pin setup because adapters are available for many situations.
For more detail, read our guide to 7 pin vs 13 pin towbar electrics or visit our main towbar wiring types page.
It can do. Parking sensors are designed to detect objects behind the vehicle, so they may detect either the towbar itself or the bike rack when fitted.
When the bike rack is attached, this is usually expected. However, when the rack is removed, a fixed towbar may still be detected by some sensor systems.
This is one reason many drivers with parking sensors choose a detachable towbar. When the towbar neck is removed, the rear of the vehicle is clearer and less likely to trigger the sensors.
For more help, read our guide: Do Parking Sensors Work with Towbars?
As a simple guide:
The right choice depends on your vehicle and the bike rack you plan to use.
A towbar-mounted bike rack can make carrying bikes much easier, but it is important to choose the right towbar and wiring setup first.
First 4 Towbars can help you compare towbar types, understand wiring options and choose a setup that works with your vehicle and bike rack.
Towbar fitting does not need to be complicated. Once you know your vehicle, what you want to tow and which wiring option you need, choosing the right setup becomes much easier.
For more information, read our full towbar fitting guide, compare available towbar types, visit our towbar wiring types page, or get in touch with the First 4 Towbars team for advice before requesting a quote.
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