Authentic Brompton factory replacement part. Read more.
Not suitable for Sturmey-Archer 3-speed with steel shell, nor for any Sturmey-Archer 5-speed, nor for any SRAM hub.
Needed part helped get me back on the road
![Brompton Chain Tensioner Nut and Washer 3-Speed Sturmey Alloy - QCTN3-SA[2]](https://cdn.shoplightspeed.com/shops/621737/files/9868222/650x650x2/brompton-chain-tensioner-nut-and-washer-3-speed-st.jpg)
![Brompton Brompton Chain Tensioner Nut and Washer 3-Speed Sturmey Alloy - QCTN3-SA[2]](https://cdn.shoplightspeed.com/shops/621737/files/9868222/325x325x2/brompton-brompton-chain-tensioner-nut-and-washer-3.jpg "Brompton Brompton Chain Tensioner Nut and Washer 3-Speed Sturmey Alloy - QCTN3-SA[2]")