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Replacing Brompton Rear Hinge

We just recently saw the first rear hinge wear to the point of needing replacement on a Brompton bicycle. It takes many, many miles for the rear hinge to need replacing, so it's no surprise that it took five years before we saw a single one (and the owner is a daily commuter even in the salty Minnesota winters). If you're riding your Brompton as your main mode of transport, you may need to eventually replace the rear hinge. This is a repair that is best handled by a bike shop with a top notch service department that is familiar with Brompton Bikes. If you don't have anyone near you capable of doing the job (or in ownership of the needed tools), then you're lucky the Brompton is so easy to ship as we'd be happy to do the repair for you professionally. As a part of the process, we'll promptly get your Brompton back on your doorstep.

The Brompton Bushing Kit includes all the parts that need replacing, the necessary allen wrench, instructions and a drill bit. (Used to drill off the head of one or both of the bolts.) For tools, the service department will have a Brompton specific rear hinge reamer and some Loctite. It's not necessary, but it'll make it easier to remove the old bushings using a 13/32-inch tap.

We spent a fair bit of time researching the processes before we actually did it, but once our ducks were in a row the repair went smoothly and fairly quickly. The first step is to inspect the bushings to determine if they need replacing.

The captions explain the work we do:

Links Regarding This Job:
Brompton Instructions (pdf)
Rear Hinge Bushing Kit
Brompton Specific Reamer (Special Order) Contact Us.

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