Brompton Chains

Replacement chains for your Brompton

All current Brompton bicycles use the 3/32 inch chain (made for Brompton by SRAM)

The older 1/8 inch chain is (discontinued by Brompton from 2017) no longer available

Newer Bromptons / sprockets all use the 3/32 inch chain width

Previously these 3/32 inch chains were only used on derailleur (2 and 6 speed) Br...

Replacement chains for your Brompton

All current Brompton bicycles use the 3/32 inch chain (made for Brompton by SRAM)

The older 1/8 inch chain is (discontinued by Brompton from 2017) no longer available

Newer Bromptons / sprockets all use the 3/32 inch chain width

Previously these 3/32 inch chains were only used on derailleur (2 and 6 speed) Brompton bikes

If you are in doubt which chain you need - choose this width and also get a new rear sprocket (ideally chain and sprocket should be changed at the same time). The 3/32 inch chains also have the benefit of using a SRAM powerlink - making installation of the chain easier.

Older Bromptons with a single rear sprocket (1 / 3 / 5 speed) used to use 1/8 inch chains. These would only be used with an old sprocket - although newer 1 and 3 speed bikes also use the 3/32 inch chain

We (and Brompton) recommend changing the rear sprocket(s) whenever the chain is changed (as they tend to wear together, so if you change just the chain, you may well find that the chain slips on the old sprocket when under load)

Chain size can be worked out based on the number of teeth on the front chainwheel and the number of teeth on the largest rear sprocket - as shown in the table below

Chainring sizeLargest Rear SprocketChain requiredNote
44T12T/13TQCHAIN096DRReduced gearing 3 speed / single speed
44T15T/16TQCHAIN098DRReduced gearing 6 speed
50T13TQCHAIN098DRStandard 3 speed Brompton
50T16TQCHAIN100DRStandard 6 speed/Reduced gearing 2 speed
54T13TQCHAIN100DRIncreased gearing 3 speed
54T16TQCHAIN102DRStandard 2 speed/Increased gearing 6 speed
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Brompton Chains We have 7 products.

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Showing 1 - 7 of 7 items