Originally Posted by
Racing Dan
The cheap tiagra cassettes does not have loose cogs. They are all pinned together, except the two smallest cogs.
Are the pins structural, or just replacements for the screws Shimano used to use? Unless the cogs you want to swap out are on some sort of carrier, you can remove the pins.
It looks like 4700 cassettes are solid steel for 10-4, with a carrier unit for 3 to 1. That should work if it is the higher gears are the ones you want to exchange.
Or use Miche or SRAM cassettes instead.