CHAIN TENSIONER NUT - 3/6 SPEED
Genuine Brompton replacement Sturmey Archer Chain Tensioner Nut. Redesigned in 2017 to giving a smoother route for the toggle chain, this is a worthy upgrade if you have the older model or yours is just rusty.
This unit can only be used on later Alloy shell Sturmey Archer 3 Speed BSR and 6 speed BWR hubs.
- Brompton Chain Tensioner Nut - For 3/6 Speed Sturmey Archer BSR and BWR hubs
- Genuine Brompton replacement part
- Redesigned in 2017 giving a smoother travel route for the toggle chain
- Can only be used on Alloy shell Sturmey Archer 3 Speed BSR and 6 speed BWR hubs
- Supplied as a single Nut
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 rideability 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.