^ this, unless you're using a 6spd friction system, as to my knowledge shim and campy brifters are all for 8 speed and up. In that case you'd need an 8 speed freewheel/ 9 or 10 speed cassette (and a wheel with a freehub), and possibly a longer chain..
^ this, unless you're using a 6spd friction system, as to my knowledge shim and campy brifters are all for 8 speed and up. In that case you'd need an 8 speed freewheel/ 9 or 10 speed cassette (and a wheel with a freehub), and possibly a longer chain..