brompton_bikes_australia_shop_SPARES_nut_Q101145.jpg
brompton_bikes_australia_shop_SPARES_nut_Q100645.jpg
brompton_bikes_australia_shop_SPARES_nut_Q101145.jpg
brompton_bikes_australia_shop_SPARES_nut_Q100645.jpg

Chain tensioner nut and washer

from A$7.00
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Short Brompton chain tensioner nut for 3 Speed

Technical notes:

This is the shorter 16.9mm nut used on old steel shell (2004 and before) hubs - using the SA I gear indicator chain

Current hubs (BSR and BWR) use a 19.5mm nut and use the SA II gear indicator chain

Chain tensioner / gear indicator nut:

(This is the nut with a hole in the side)
Earlier hubs 2004 and before (normally with steel shell) use this nut.
The difference between this and the later alloy shell nut may be small - but it is essential to use the right one. 

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