Seat Sleeve for Main-Frame Brompton

FREE SHIPPING ON ALL PARTS & ACCESSORIES ORDERS OVER $150*

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USA: We use UPS, UPS Mail Innovations, or Canada Post/USPS in the USA. No US or Canadian Tax is charged at checkout and all cross-border Fees and Duties are prepaid so there are no surprises. Orders may take 1-2 business days to process. A tracking number will be provided by email.

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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.