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Brompton chain 100 Links 3/32" with PowerLink



Brompton 100 link replacement chain for 2 or 6 speed Bromptons with 50T front chainring, or 3 speed with 13T rear sprocket and 54T front chainring.

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100 link Brompton chain

100 links 1/2" x 3/32"

Fits for a standard 2 speed (12/16T) or 6 speed (13/16T) Brompton bike (with a 50 tooth front chainring), or a 13T 3 speed with a 54 tooth front chainring.

Brompton chain with 100 links

Fits standard 6 speed Brompton (SRAM or Sturmey Archer BWR rear hub) - with 50T front chain ring.

Note: if your chainring is smaller you would need to remove links (e.g. if changed from 50 to 44 you would remove two links) - or purchase a QCHAIN098DR - 98 link chain

If your chainring is bigger your would need to add links (e.g. if changed from 50 to 54 teeth you would add two links - giving a chain length of 102 links) - or purchase a QCHAIN102DR - 102 link chain

Tools Required:

To remove your old chain and re-install this new one you may need a chain tool such as the CT-3 or CT-5 from Park Tool or a pair of master link pliers

Installing the new chain will be easier as it comes with a SRAM PowerLink

Brompton 2020 Q part code: Q100005
Brompton Q part code: QCHAIN100DR
Brompton part number: 9022045 

Brompton chain length summary

ChainringOne Rear SprocketTwo Rear Sprockets
54 tooth12 or 13t100 Links12/16t, 13/16t or 13/15t102 Links
50 tooth12t or 13t98 Links12/16t, 13/16t or 13/15t100 Links
44 tooth12t, 13t or 14t96 Links12/16t, 13/16t or 13/15t98 Links

We made this video on how to choose the right size chain, remove the existing chain and install a new chain on your Brompton folding bike



Purring again

While a little disappointed to have to replace within the year after average mileage, change and spare part/s were at least not that expensive and Brompton is back to its best again. Thank you Mike and Brilliant Bikes again for great service.

  • 1 out of 1 people found this review useful.

Excellent Service

I bought this along with a chain tensioner and rear sprockets. I ordered the wrong sprockets by mistake but they swapped them straight away, no fuss. Highly recommended.

  • 1 out of 1 people found this review useful.

Excellent service as usual

Like others here I bought the chain along with a replacement set of rear sprockets. As I do quite high mileage on my Brompton P6 this is an annual job. Total time taken for the swap is about an hour- made easier by the "powerlink" Don't risk replacing the chain without the sprockets-- I did this in the past and then suffered chain jumping until I realised the cause of the problem. These part wear faster on a Brompton c.w. a normal bike as everything is closer to the ground and thus more likely to collect dirt. Brilliant Bikes service excellent as always!


    Great Service

    I've had a few of these from Brilliant Bikes over the years and they always arrive the next day. I was a bit suspicious of the PowerLink but have never had any problems with it coming loose. When I take off the old chain I just use a chain punch as normal rather than trying to find the PowerLink.


      Excellent quality and service as usual

      I bought this along with two sets of sprockets for a BWR hub. Both products arrived quickly and in good order. I was even supplied with a pair of plastic gloves which were put to good use. This chain came with a power link connection, this is the first time I have tried one with this chain size (I have been using them for years on my 9 speed road bike). No problems with transmission and the postage and packing was also free. I also like the personal touch with the hand drawn smiley sun on the invoice.

      Thank you Brilliant Bikes

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        Brompton chain 100 Links 3/32" with PowerLink

        Brompton chain 100 Links 3/32" with PowerLink

        Brompton 100 link replacement chain for 2 or 6 speed Bromptons with 50T front chainring, or 3 speed with 13T rear sprocket and 54T front chainring.

        Have a question?

        2 Question(s) answered - see below

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          Answered questions

        • Asked by Mike
          on 12/05/2019
          I have a 6 speed Brompton bike can I purchase spare chain power link connectors if so please adviseThanks Answer:
        • Asked by Ken Twydell
          on 11/10/2020
          I have to ask... Does someone actually do a hand drawn smiley face on every invoice? I assume that it is hand drain as the ink seems to have soaked through the paper although I guess that it could be done at the print stage. If so, clever! I thought that it was a really nice gesture however you achieve it. You deserve every success. Answer:
          Yes we do :), thank you

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