Review on Ultimate Performance: Shimano HG400 9 Speed Mountain Bike Cassette - CS-HG400-9 (11-32) [Misc.] by Jason Yancy

We put this on a mountain bike so durability was more important than the last gram of weight (also extra money if you go that route). very quick and easy, along with the new chain of course, because you don't want to connect the new cassette to the old chain. To install this cassette on a standard Shimano hub, you will need a hub tool and a chain whip. (Actually only needed to remove the old cassette as using it will tighten the new cassette even more. If you are using a torque wrench I think the standard is 40Nm but I could be wrong. Of course you will need a chain tool and maybe , "magic link" for chain replacement The length may differ from your old chain if the size of the largest sprocket differs from your old sprocket - and of course if you change the size (most teeth on the cassette) .need to be sure your derailleur still works rks Nothing more to say I would say I have a genuine Shimano part but if it was a fake then it was meticulously finished down to the last detail - seriously it just was a genuine Shimano part in standard Shimano packaging. That's what I wanted and that's what I got! When to replace? When you've worn out 8 or 10 chains, you're probably wearing out the cassette too. If the new chain not in the grooves between your teeth The most commonly used cog on the cassette, inevitably wears the chain, affecting power transfer and smooth shifting. It can even get stuck on your teeth!