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Evolution Bikes workshop

Whether its a puncture repair, servicing or a full custom build, our team of mechanics here at Evolution Bikes are on hand to take care of almost anything your bike can throw at us. With a collective experience of over 45 years of cycle servicing we can guide you through anything from a full custom build to changing brake pads with fair, honest and transparent pricing. Getting your bike back on the road as quickly as possible is our main priority. We look at every job on an individual basis and will only charge you for the work we do.


Due to demands on our busy workshop, we now have an off site purpose built workshop. Both our Bangor and Porth Eirias stores operate as drop off points for the main workshop and we can now no longer carry out servicing work within the stores. Where possible, we now operate a 3 day workshop turnaround, where your bike is dropped off on day 1, serviced on day 2 and collected on day 3 (subject to parts availability). We now have to operate on a pre-booking system for servicing to ensure you are back on the road or trail as quickly as possible (we also know problems can occur mid ride so will always try our best to help out!). We feel this is the fairest way of running our workshop. We are all riders here at Evolution Bikes and appreciate bikes need tweaks from time to time; if time allows we are more than happy to do minor on the spot repairs.

For all workshop bookings or enquiries, please fill out the contact from below;

Workshop Booking Form


Once the repair is complete you will be contacted by a method of your choice:
• text• phone call• email •
To let you know the repair is complete and the bike is ready for collection.


On collection of your bicycle we will talk you through all work undertaken and highlight any areas which may need further attention. You will also receive information detailing work done to your bike, with all information available at any time at a later date. Repairs are payable on collection. Our workshop is incredibly busy and we value our storage space in order to continue to be able to offer great service and turnaround. After completion and notification of any work, bikes will be stored for 7 days free of charge. Any additional time in storage will incur a charge of £10/day unless previously arranged with the workshop. We ask if you would like additional time to collect your bike please confirm with the workshop by email on


  • Inspect Frame and Forks
  • Inspect and Inflate Tyres
  • Inspect Drive chain for wear and chain wear
  • Index and adjust gears including hanger adjustment.
  • Check Bottom Bracket for wear
  • Set and Adjust Brakes and advise customer if new pads needed.
  • Lubricate Chain and Pivot Points (i.e derailleurs and brakes)
  • Check Cranks, Stem, Pedals
  • Adjust Headset for free movement and play.
  • Remove wheels from bike and inspect rims and hubs for wear.
  • Road Test Ride
  • Advisory of any further work needed

*Parts not included – Any extra parts not included in the service will be charged on top of the service charge as required*


  • Bronze service and including:
  • Check & adjust headset
  • Cable replacement, if required
  • Wheel true – front and rear (off bike)
  • Hub bearing adjustment
  • Bottom bracket check & adjustment
  • Seat post removed, inspected and greased

*Parts not included – Any extra parts not included in the service will be charged on top of the service charge as required*


  • As above and including:
  • Bike fully stripped to frame
  • Frame cleaned and inspected
  • Bottom bracket removed, cleaned, greased and refitted, bearings replaced if required
  • Headset removed, cleaned, greased and refitted, bearings replaced if required
  • Drivechain completely removed, cleaned and parts replaced as required
  • Brakes checked, new pads fitted if required
  • Front and rear hubs serviced

*Parts not included – Any extra parts not included in the service will be charged on top of the service charge as required*

  • Check/Set-Up Gears
  • New Shimano Gear Cable set
  • Check/Set-up Brakes (Does not include brake bleed)
  • Full Bike Clean and Degrease
  • Full Bike Safety Inspection

Dirty bike charge - £30.00

Bikes presented in dirty condition may be subject to the dirty bike charge to allow inspection of the frame and components

Di2 Gear Service

Our workshop is fully qualified to carry out any servicing work and updates on your Shimano Di2 equip road bike, mountain bike or E-bike. To keep your drive chain running smoothly, we recommend performing regular updates on your Di2 system. Our Di2 service includes the following:
    • Update Di2 firmware to current version
    • Diagnose faults in Di2 system
    • Charge battery
    • Check and remove errors
    • Programme shift modes and multi-shift options to your desired settings
    • Index gears – front and rear
    • Check hanger alignment
    • Clean and lubricate chain

We are authorised to work on Brose, Bosch, Shimano and Fazua systems.

eBike First Service

This is free of charge for all bikes purchased in-store at Evolution Bikes and is generally carried out after 500 miles of use after the purchase date.

During this service we:

    • Inspect Bike for any damage
    • Remove Battery
    • Check Lock for function and lubricate
    • Check Battery Terminals and lubricate
    • Full Bolt check to Motor Mounts and Torque as required
    • Torque Stem Bolts, Crank Bolts, Seat Clamp bolts
    • Check Wheels for True
    • Inflate Tyres to correct pressure
    • Check and Adjust Brakes
    • Check hanger and index gears
    • Lubricate Drivechain
    • Check/ Update as required firmware on Bike

Service work

The workshop can also be reached at