Rear Cassette MTB do you have 9 speed 8 speed wheels?

It'll fit, but it won't work for you. You have 8-speed shifters so you must use an 8-speed cassette. If you want a 9 speed cassette you will need to buy 9 speed shifters and make sure your chain is compatible as well.

Edit: I'm confused. If you have 8 or 9 speed shifters you must match the cassette with same. There is Campy and Shimano type cassettes. If you have any besides a Campy drivetrain you need to get Shimano compatible cassettes. I think that covers it.

On *most* hubs, you can fit the 9-spd cassette onto one that had an 8-spd in place. However, some older hubs had dedicated 8-spd freehub bodies and the 9-spds won't fit on them. 98% of the time this isn't an issue, especially if the hub you have was made within the last 5 or 6 years. So your answer is....probably. If you put it on there and can't tighten the lockring, then you'll know you either need to stick with 8-spd or possibly ask a bike shop if they can outfit you with a newer freehub body on your old hub.

As MR said, you need to be aware that going to 9-spd in the rear will require you to use a 9-spd rear shifter, too. You can keep your old front shifter, but the rear needs to match the cassette.

And, also as MR said, if this is a road bike, don't try to mix Shimano and Campy parts.....Shimano and Sram are fine, but Campy does things differently.

Hope this helps some, good luck with the auction.

You don't fit a cassette on the rim, you fit it on the hub. The ad mentions a Shimano hub. In theory at least, this is possible. You'd need to change the axle to a longer one and the freehub body to the correct one. A 7 speed rear wheel is too narrow for the spacing for your frame if your current frame is 8 speed. Note that wheels are made of the rim (Mavic 234), hub (Shimano) and spokes, so in essence the rim has nothing to do with the cassette.

A couple of things to consider...

How old is your bike? Most older and some lower end bikes have freewheels, not cassettes.

If you are not for sure what you have, take it to a bike shop. Most shops are willing to give you advice.

NOTE: Changing a cassette or freewheel requires special tools. Unless you have a cassette lock ring tool (or a chainwhip for freewheels) it's a good idea to have the pros do it.

Good luck and happy riding.

Cassettes are really cheap, unless you are outfitting a high-end bike; just go to a local bike store and you should be able to pick one up. As for fit, you can typically use 8 or 9, but moving up to 10 is another story.

No just stick to a 8 speed cassette, the chain may not fit, derailleur too.

dont buy a used one,i just got one(8 speed) for $29.99, go down to your local bike shop