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