not easy to find now..….see the enviolo section..
attaches via a circlip..upgrade to a screw on freewheel and use a 9 spline
https://www.reallyusefulbikes.com/enviolospares/p/freewheel-assembly-threaded-lockring-cy2024
not easy to find now..….see the enviolo section..
attaches via a circlip..upgrade to a screw on freewheel and use a 9 spline
https://www.reallyusefulbikes.com/enviolospares/p/freewheel-assembly-threaded-lockring-cy2024