I am going to fit a bigger front disc to my bike. Most disc lock rings seem to use a cassette/freewheel tool but mine need something else. I'm struggling to find the right tool. Can anybody point me in the right direction? Bike is a 2014 Trek Superfly 9.7.
That would do it ( but might have a chamfer on the edge of the socket and needs a flat face, as the lock ring is very thin), but I use the flat park BB spanner to undo mine
