Brompton derailleur spring set - pre-2017
The Brompton derailleur causes the mechanism to return when the lever is released on a two or six speed Brompton.
This is the set along with dog-leg section and end stop - for pre-2017 derailleur / trigger systems (give us a ring or email us if you are not sure)
This should be added to the derailleur cable if you are after the complete set which was discontinued in 2017
We made this short video on how the Brompton 2/6 speed derailleur system works
Brompton 2020 Q part code: Q100638
Brompton Q part code: QCTSPGTRIGSET
Brompton part number: 9002795
Previously this was just the spring itself:
Old Brompton Q part code: QGCABSPRSETDR
Old Brompton part number: 9012268
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