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  • Brompton JIS Cartridge Bottom Bracket - 119mm

BROMPTON

BOTTOM BRACKET - CARTRIDGE

$34.99 CAD

Quantity

We currently have 4 in stock.

Genuine Brompton Replacement JIS Cartridge Bottom Bracket. This is a direct replacement for the bottom bracket fitted as standard on all Brompton bikes since 2013 with the Spider crankset with replacement chainring. With daily use expect to get 2-3 years out of one of these between replacements.   

This bottom bracket is only compatible with the Brompton Spider Crank. The previous generation Stronglight crank with the integrated chainring used an ISO bottom bracket which is no longer available. If you have a previous generation crank and need a new BB then you will also need to upgrade to a Spider crank.

  • Genuine Brompton Replacement Component
  • JIS Taper Cartride Bottom Bracket
  • Suitable for the Brompton Spider Cranks with replaceable chainring
  • Durable, hard-wearing semi-sealed cartridge bottom bracket with square tapered spindle
  • 68X119mm
  • Installed using a standard 22 tooth Shimano Bottom Bracket tool
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A BIT ABOUT BROMPTON: If you were to walk into the store and look at a Brompton we would say there are three things you should look for in a folding bike. All of them are fairly obvious. One, the bike should ride well - and, on a small wheeled bike that's tricky because there's a fine line between maneuverability (which is a virtue) and twitchiness (which is a vice). Two, the bike should fold well - otherwise you're blood pressure will rise and you'll curse the day you bought it. Third, it should be transportable, or highly storable - because that's the whole point, right?

Brompton is the only company we've seen that answers all three criteria - and believe us, we've tried every brand out there. The reason others can't compete is because Brompton has answered a fundamental engineering problem. If a bike is going to unfold to a large footprint (which takes the twitch out) then it is unfolding to a bigger bike - and by all logic, a bigger bike unfolded would be a bigger bike folded. So, it's pretty much true that for most folding bikes they either have great rideabilty but poor transportability or vice versa. And nearly all of them are a mess to fold.

Not Brompton. Brompton has designed the Platonic form of all folding bikes. The bike folds to the smallest size on the market, unfolds in a highly precise and easy manner, and has the same axle-to-axle footprint as a hybrid bike. How did they do this? By not only designing a clever frame, but also designing some 1200 proprietary parts that make everything fit - and fit perfectly. Oh, and nearly all of this is made in England. No wonder this bike has a cult following.

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