I need your advice.
I have a Giant Escape 2014 UK model bike and it's time to change the chain and the original cassette/freewheel, which are worn out.
My question is, if I get this Sram PG850 8-speed cassette, will it fit nicely instead of the original Shimano MF-TZ31 Tourney 7-speed freewheel? They say Sram cassettes are Shimano compatible but I just want to be sure, I'm rather a newbie to cycling.
Will it combine well with the bike's current Shimano Tourney TX55 6/7 speed rear derailleur and Shimano EZ FIRE 40 21 speed shifters? (I don't mind having only 7 speeds on the new cassette).
Thanks for helping!