Brompton 3/32" Chain with Powerlink
All current Brompton bicycles are built with 3/32” width chains.
The chain must have the correct number of links and this will depend on the combination of chainring and sprocket/s as set out below:
|Chainring||ONE Rear Sprocket||TWO Rear Sprockets|
|54T||12T or 13T||100L||16T/12T, 16T/13T or 15T/13T||102L|
|50T||12T or 13T||98L||16T/12T, 16T/13T or 15T/13T||100L|
|44T||12T, 13T, 14T||96L||16T/12T, 16T/13T or 15T/13T||98L|
The 3/32” width chains come with a tool free connecting link.
When fitting a new chain the sprockets must be replaced at the same time.
Some earlier Bromptons have been built with 1/8” chains and sprockets. The combinations of chainring and sprocket required are the same as in the table above, but the 1/8” chain must of course be used in combination with 1/8” sprockets only. The tool free connecting link cannot be used with a 1/8” width chain.