If you have removed your existing sprocket, you see that there are 3 splines on the sprocket and 3 corresponding grooves on the hub.
If you have not removed your existing sprocket - check the colour (clean it first) if it's still dark grek / black in colour then this is the one. (If it's silver then your hub is probably a BWR - Brompton Wide Ratio and will be marked as such - and you don't want this sprocket.
The kits consists of:
- Plastic chain guard
- Circlip
- Spacer
- 13T sprocket with ISO fitting (3 splines) - grey / black in colour
Tools required: To remove the sprocket from the wheel you will need a flat head screwdiver (to prise the circlip apart), some brute force (to remove the existing sprocket) and some hand cleaner (as you are going to get dirty hands unless you wear gloves)
Brompton part number: QRSPRSTACK-SA3-13
About
Brompton
:
In 2010 Brompton produced 28000 bicycles (75% for the export Market) and are now the UKs largest bicycle manufacturer.
At the heart of the company is making a bloody good bike - says MD Will Butler-Adams. We don't need to say more.
The Brompton timeline
2012
Brompton launches the H type with a higher ride position and Mini Ortlieb bags
2010
Brompton receives the Queens award for international trade and Queens award for innovation
2009
Andrew Ritchie receives the Prince Phillip designers prize
Brompton Wide Range Hub (BWR) introduced - with a 302% range
Satin finish introduced across the whole range
2007
Rear frame clip introduced
2005
S-type (sports / straight) and P Type handlebars introduced
Superlight upgrade launched - including alloy headset, titanium forks, rear frame, pedal bolt and mudguard stays.
2004
Long wheelbase and improved hinge joints introduced
2002
Brompton 2 sprocket derailleur system introduced
2000
Mark 3 models introduced - better componentry all round
1995
Brompton receives Queens award for export
1987
Brompton goes into full time production
1981
First 30 Brompton bikes produced to order
1976
Brompton Bicycle is registered as a limited company
1975
Andrew Ritchie begins designing a folding bike in his flat, overlooking the Brompton Oratory
Related tags:
Sprocket
Brompton