Sturmey Archer Circlip – NIG
This is the Circlip that is used and included in the Planet Cage Assembly (HSA434), just if you need it on its own.
Used in the following Sturmey Archer hubs:
Brompton Sturmey Archer BSR - Brompton Standard Ratio 3 speed hub
Sturmey Archer ref: HSA435
The Circlip looks very much like the Pawl Spring Circlip (HSA450), but this Circlip does not have a 90 degree bend to help it stay in place
Circlip (and sprocket) removal instructions
Circlip (and sprocket) installation instructions