How To Assemble Your New Bike

Whether you're looking to purchase a new bike from Sigma Sports or already have placed your order, you can rest assured that your new steed will be packaged carefully, and arrive with only minimal assembly required. 

Once your order has been placed one of our Cytech qualified mechanics will hand build your bike leaving only a few minor adjustments for you to do once the bike arrives. Your mechanic will also complete a rigorous Pre-delivery Inspection (PDI) before carefully re-packing for delivery to you.

We know you'll want to get riding straight away, that is why we've put together the 7 steps below to make sure you're on the road in no time. If you have any questions regarding receiving a bike from us, or get stuck at any point in the assembly process be sure to call one of our experts on +44 (0)20 8614 9777.

How To Assemble your New Bike Video

Tools You'll Need

To build your bike you'll only need a few tools.


The multi tool provided with your bike, a pedal wrench (or 8mm allen key, depending on your pedals) and a pair of scissors to open the box and cut the zip-ties with.

1. Open the Box and Remove Your Bike

Once you've opened the box you'll find a plastic wallet that contains all of your order information as well as an instruction manual for your specific bike. Make sure you keep hold of this info as it contains your bike's serial number and order information.


Carefully remove your bike from the box and remove all of the packaging and zip ties with your scissors or wire cutters. 

2. Attach the Handlebars

First, let’s attach the handlebars. Using the multitool provided with your bike, clamp the faceplate over the bars so that they are fastened securely but not so tight that you cannot change the angle of the bars. The angle of your bars will be adjusted later.

3. Secure Your Front Wheel

Next it’s time to fit the front wheel. Bikes shipped within the UK will come with the rear wheel installed so all you have to do is slide in the front wheel. First, remove the plastic fork spacer,  along with any other packing material.

Set the frame upright on the ground and attach the wheel. Make sure that the brake is properly aligned and that the wheel is sitting straight. Next tighten the quick release skewer and make sure that the brake quick release is tightened.

4. Adjust Your Handlebars

Now it’s time to finish adjusting the handlebars. Make adjustments to the angle. Note that many models of handlebar have handy measurement markers, allowing you to find your perfect angle.


Make sure that all of the face plate bolts are tightened equally using your Allen key, so that there is the same distance between the faceplate and the stem behind all bolts. This will prevent the bars from moving whilst you are out on the road. Note that the stem should already be centralised and tightened by our mechanics.

5. Fit Your Saddle

Next up is fitting the saddle. The seatpost has already been greased or pasted so all you have to do is slide the post into the frame at your desired height and tighten the seat clamp using your multi tool.

6. Fit Your Pedals

Fitting your pedals is easy too. Make sure to remember that there is a left and right specific pedal and that the left pedal is reverse threaded. Finally have a quick check to make sure your handlebars and seatpost clamp are appropriately tightened and your brake quick release is closed. Now you ready to hit the road. If you have any questions about your bike and its assembly please do not hesitate to contact our experts.

7. Final Checks

Finally give your bike a final check over to ensure your handlebars and seatpost clamp are tightened securely, and also that your brakes' quick releases are in the closed position.


Now you're ready to hit the road!

If you have any questions regarding receiving a bike from us, or get stuck at any point in the assembly process be sure to call one of our experts on +44 (0)20 8614 9777.

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