Bike builder

Build your own bike online with Planet X. Every frame set on our site includes a built-in bike builder, letting you customise your full setup directly on the product page. Whether you’re after a lightweight road machine, an all-terrain gravel bike or a full-suspension MTB, you can spec your ideal build from frame to finishing kit. Choose drivetrain, wheels, and cockpit components to match your ride goals and budget, and see real-time pricing as you go. All bikes are hand-built in our Sheffield workshop by experienced UK technicians. With Clearpay finance available, it’s never been easier to create your perfect ride without compromise.

Where other companies are happy to sell standard builds of bikes pre-built by robots in some anonymous factory, we're proud to offer a custom bike builder. We know that getting our hands on the bike and doing it the old fashion way guarantees quality. We think this is the best way to ensure you get the right bike for you, and you can be sure that the bike has been fully built and checked by an expert.

From Box to Bike

Once your order is placed online, your custom bike is hand-built by Cytech trained technicians in our Sheffield (UK) workshop. Your bike is fully built, checked and signed off before being dispatched in a custom-made bike box. We keep you informed every step of the way.

Why Choose Planet X’s Bike Builder?

Our custom bike builder lets you create a bike that’s uniquely yours, without inflated prices. Unlike off-the-shelf models, you control every detail of the build. Whether you want Shimano or SRAM, carbon or alloy, aggressive or endurance geometry, you can tailor your bike to fit your riding style and budget.

• No compromise spec options

• Hand-built in Britain

• Transparent pricing

• Flexible Clearpay & Klarna finance available

• Decades of experience from a British bike brand you can trust

Ready to build your custom bike?

What types of bikes can I build?

We have a huge range of fully customisable bikes available. Our most popular custom builds are road, MTB and gravel bikes, but we also build performance racing and track bikes through to urban/commuters.

Custom Road Bikes

From full-on high-performance road racing bikes through to long-distance touring and sportive bikes, we have a road bike for you that will fit the bill. Carbon, steel, aluminium, or titanium. The choice is yours.

Custom mountain bikes

Aimed at providing comfort and control over a variety of different routes, our mountain bikes are aimed at riding trails on the rougher side of the spectrum. We offer wide hard tail frames, tyres, suspension forks and wide range gearing, giving the rider the support and confidence to ride faster and further on technical terrain.

Custom gravel bikes

Providing a more relaxed style of geometry and wider tyres than a road bike, gravel bikes enable the rider to ride off-road in comfort and control while still being fast for road use. They’re also built stronger to withstand the impacts of riding off-road trails and use less gears for added simplicity.

How does this bike configurator work?

Our easy-to-use bike configurator is designed to help you build and customise the perfect bike for you and your riding style. Here’s how it works:

1. Set your bike type: The most important step is to figure out where you want to ride your bike. Will you be riding it on the road only? Are you looking for something for the mountains or off-road? Would you like something a bit more versatile so you can ride it both on the road and on gravel/light off-road terrain? Are you just looking for something to cruise around town or commute to work? This will help narrow down the right bike to suit your riding style.

2. Select your frame: Based on your budget and riding style, this is where you’ll narrow down your choice of material. Are you looking for something high-end with light-weight carbon fibre? Do you need something solid to withstand a good off-road thrashing, like a rigid steel or titanium frame?

3. Pick a size and colour: Choosing the right size bike to fit you is incredibly important for your comfort and even to prevent injuries over the long-term. Each bike has different specs and measurements, so be sure to click the Size Guide on each bike to see if it measures up. Once you’ve found a fit, pick your paint job.

4. Choose your components: This is where the true customisations really come to life. Select everything from your group set from your favourite brands like Shimano and SRAM, through to your ideal saddle, wheels, and even some cool tassels to hang off your handlebars (OK, that last one might be a joke!).

5. Review and pay: Once you’re happy with everything, check out and pay with a load of options including Credit Card, PayPal, Buy Now Pay Later or Finance options, CycleScheme and more. Once our team has checked it all over, we’ll send your brand new, shiny, fully-built bike to your door.

What happens next?

Remember that your bike will be built to order, which is a good thing. It does mean that we won't ship your bike immediately, but we know from our long experience that it will be worth the little extra wait. We will keep you informed every step of the way so you know when your new bike being built.

• We contact you once your bike is planned into our build schedule. At this point, we will give you a bike build (birth!) date.
• Your bike is built in its entirety by an experienced technician.
• We contact you to confirm that the bike will be shipped or is ready for pickup.
• Your bike is shipped via our trusted international courier service.
• Aftercare starts - we like to contact customers a short while after their bike has been delivered to ensure everything is well.

FAQs On Our Bike Building Service

Can I fit 650b wheels on my 700c bike?

If a bike has been designed for taking 650b and 700c wheels, then we will mention it explicitly in the product content. If you don’t see it mentioned, that means the bike was not intended for 650b wheels, and we didn’t try it.

Ahah, but will they fit?

If you have the correct axle type, the correct hub spacing, the correct brake type and a rim that is the same thickness as the 700c wheel it replaces then yes, technically it will fit. But that doesn’t mean that it won’t handle like a bag of spanners and that you’ll not be scraping your chain rings over every spec of dust that you ride over because your BB is now too low. Your geometry is all messed up.

Can I upgrade my bike using components not on the customise list?

Bikes can only be upgraded with parts from the customise list for that bike. However, there is usually a good selection of parts and upgrades to choose from.

I've chipped my frame. Do you sell touch-up paint?

Unfortunately, we don't currently sell touch-up paint for our frames, and we cannot supply RAL codes for the paint colours we use because our suppliers use a different system. The best thing to do is to take a sample of the paint to a local paint supplier and ask them to mix the colour.

I already have a set of wheels, can you build a bike for me without wheels?

Unfortunately, we are unable to build bikes without wheels. For safety reasons, all our bikes must be set up as ready to ride by our trained mechanics.

Can I build my own bike online at Planet X?

Yes. Every bike and frame set page on our site includes an integrated bike builder, so you can customise your setup directly before checkout. It’s simple, transparent, and tailored to your ride style.

What types of bikes can I customise?

You can build road bikes, gravel bikes, mountain bikes and adventure rigs using our builder. Each model supports a wide range of groups set, wheel and finishing kit options.

How long does a built-to-order bike take?

Most bikes are built and shipped within 7–14 working days, depending on parts availability. We’ll keep you updated once your order is placed.

Do you offer finance for custom builds?

Yes. You can pay using flexible finance options through Clearpay and Klarna, making it easier to afford your ideal setup.

Can I get help with component choices?

Absolutely. Our team of UK-based experts is on hand to advise you, whether you’re stuck on group set choice, sizing, or setup. Use live chat or get in touch via our contact form below.