Workshop Services

Our workshop reception area, permanently manned by one of the team to handle small jobs and service book-ins and collections, is located directly inside the shop entrance while the main workshop facility is located on the top floor.


On the day of the service, we kindly ask to have your bike in the shop no later than 11am. We will strive to get your bike serviced and finished before the end of that day (depending on availability of spares). We would ask you to bring your bike in a relatively clean state. The extra cleaning of bikes will be charged.

You will get a phone call from the mechanic to confirm prices with you before any new parts are fitted. We will not continue with any work until we have spoken to you first. Any worn/broken parts will be disposed of unless otherwise requested. Your bike must be collected within a week of it being serviced or repaired. We reserve the right to charge for storage if bikes are not collected within a reasonable time.

On the day of the service we ask to have your bike in the shop no later than 11am. We will strive to get your bike serviced and finished before the end of that day (depending on availability of spares).

We would ask you to bring your bike in a relatively clean state. Extra cleaning of bikes will be charged.

You will get a phone call from the mechanic to confirm prices with you before any new parts are fitted. We ask you to leave a telephone number that you can be reached on. We will not continue with any work until we have spoken to you first.

Any worn/broken parts will be disposed of unless otherwise requested.

We would ask you to collect your bike within a week of it being serviced or repaired. We reserve the right to charge for storage if bikes are not collected within a reasonable time.

Other Services

Apart from our standard services we can do almost anything to a bike that doesn't involve welding or brazing the frame - that's still the province of a framebuilder. Among the procedures we regularly carry out are the following:

Fitting an old groupset and wheels onto a new frame
Fitting a new groupset and wheels onto an old frame
Build-up of new frame and components
Build-up of new frame and components
Wheel build
Puncture repair
Fitting a new headset
Headset service
Swapping a cassette
Gear re-indexing
Brake re-alignment
Fitting new bottom bracket
Fitting bar tape
Fitting chain
Wheel true
Fitting a tubular tyre
Gluing a tubular tyre
Hub service

Wheel Building Service

Handbuilt wheels are built for a purpose. They are built around the cyclists needs and wants and the conditions that the rider might face out on the road, pave or off-road.

All our handbuilt wheels are built in house at Sigma Sport. We carry a large variety of rims, hubs, spokes and nipples from all manufactures such as DT Swiss, Chris King, Carbon-Ti, ENVE and PMP to name a few, and we will happily order in preferred rims and hubs to meet any specific requirements. We can also rebuild your existing wheels. Please contact us or pop into the shop and we will be happy to talk through your specific requirements or guide you in choosing your next handbuilt wheelset. 

Shimano Di2 Software Upgrade

We can update your current Ultegra Di2 software to the latest update and tune the system to provide new functions.

With this box of tricks we can run a full diagnostic check on your bike, we can speed up the shifting or slow it down, the choice is up to you! We can swap over the shifting buttons. We can also change the shifters over so the right-hand shifts the front derailleur etc... if you have a satellite shifter we can also change which derailleur it shifts and what button does what. The best feature is the multi-shift function which allows you to move the derailleur across the entirety of the cassette when you hold down the button. It makes a good groupset GREAT!

This new diagnostic will not work with the old analogue Dura-Ace 7900 system, but will work with Dura-Ace 9070 Di2.

The cost for this service is £20.

Please contact us to schedule an appointment, by email or by telephone on 020 8614 9777

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