Can I use a 9 speed derailleur on a 8 speed cassette?

Condensed answer: 8 and 9-speed derailleurs have the same rear shift ratio but only when both models are made either by Shimano or SRAM. In consequence, a 9-speed derailleur can work just fine with an 8-speed cassette produced by the same brand.

Will a 9 speed cassette fit on an 8 speed hub?

8-speed Campagnolo cassettes will not fit on newer "9-speed" and "10-speed" hubs. 9- and 10-speed Campagnolo cassettes will not fit on 8-speed hubs.

Can I use a 10 speed derailleur on a 8 speed cassette?

You will need a 10 spd rear derailleur to work with a 10 spd cassette, because the spacing is smaller with a 10 spd setup. You will need a 10 speed chain for a 10 speed setup, a 9 speed chain for a 9 speed setup and any 8 speed chain will work on 8-7-6 speed or lower.

Will any derailleur work with any cassette?

As a general rule of thumb, it's best not to mix and match drivetrain components from different brands. While things such as cranks, chains and cassettes are mostly inter-compatible between brands, generally speaking, shifters and derailleurs aren't.

Can I use a 9 speed derailleur?

A 9-speed front derailleur will work, but it's not optimized and may result in more chain drops or slower shifting -or no shifting at the extreme ends of the cassette- because the gap between plates is larger than what's required for a 10-speed chain.

Are all 9 speed chains compatible?

Chain width is about 6.7 mm.

Front chainrings are less sensitive to the thickness of chain used. Otherwise, all the 9 speed chains will work well, regardless of the manufacturer: Campagnolo, SRAM and Shimano.

Are 8 and 9 speed chains the same?

7, 8, and 9 speed chains have the same inner width, but 9 speed chains have thinner outer plates for a thinner overall chain. So while a 9 speed chain works fine on a 7 or 8 speed drivetrain, it will be a weaker chain that tends to "stretch" faster.

Does derailleur need to match cassette?

The rear derailleur must be matched to the size of the largest rear sprocket. This capacity, which is expressed in terms of teeth, accounts for both the difference in size between both chainrings (e.g. 14T for a 53/39T crankset) and the largest and smallest sprockets on the bike (e.g. 17T for an 11-28T cassette).

Can I use an 8 speed derailleur on a 7 speed cassette?

8 speed shifter and cassette, 7 speed derailleur? You'll be fine. There's no "probably" about it. 6-, 7- and 8-speed gear is all cross-compatible in terms of chain width.

Can I use a SRAM cassette with Shimano derailleur?

Considering these parts were never designed to play well together, the Sram GX AXS shifter and derailleur work perfectly on the Shimano XTR cassette.

Can I use an 8 speed shifter with a 10 speed cassette?

A 10 speed chain should work on an 8-speed drivetrain. if you want 10 speeds, you will need a 10 speed-specific chain, cassette, derailleur and shifter (and a new cable while you're at it).

Can I use an 11 speed derailleur on a 8 speed cassette?

Condensed answer: An 8-speed MTB hub is wide enough to accept an 11-speed MTB cassette. An 8-speed Road hub, however, is too narrow for an 11-speed Road cassette. If you have an 8-speed road bike and want to convert it to 11 speeds, you will have to replace the hub with an 11-speed one.

Are 8 and 9 speed cassettes the same width?

Same width, different spacing

Both 8-speed and 9-speed have the same freehub width, while the 7-speed is a bit narrower. The spacing of gears of 8-speed and 9-speed differ. You need a spacer behind a 7-speed cassette for it to fit on an 8-speed or 9-speed freehub.

Are all 8 speed cassettes the same?

SRAM and Shimano are the same spacing and fit the same freehub, all 8 speed chains are compatible.

Can I use a 8 speed shifter on a 7 speed cassette?

A 7 speed cassette should be OK with 8 speed shifters. However, it is just possible that the cassette won't line up the same as your current one (due to the spacing of the cassette body relative to the axle/cones and this would be the same if you put 8 speed on there).

Will a 9-speed derailleur work on a 10 speed cassette?

A 9-speed Shimano derailleur will work on a 10-speed cassette if the shifter is also made by Shimano and designed for road bikes. It's also possible to combine a new 9-speed derailleur by Campagnolo with a 10-speed shifter and cassette made by Campagnolo.

Are Shimano cassettes interchangeable?

In some cases, it is possible to run a cassette from a different brand than the rest of your drivetrain. SRAM and Shimano cassettes, on either road or mountain bike, are interchangeable with each other as the spacing is the same between the sprockets.

Can I use any derailleur for my bike?

A derailleur for your mountain bike should match the specifications on the original derailleur. That is, while it doesn't need to be the same model of derailleur, it does need to be the same brand, in almost every case. It also needs to match the number of gears, or have more intended.

Are all 9 speed bike chains the same?

Chains for 9-Speed Drivetrains are 6.7mm wide and work well regardless of manufacturer; Shimano, SRAM and Campagnolo. Front chainrings are less sensitive to the width of a chain, therefore SRAM 9-speed drivetrains can even use 10-speed chains.

What is 8 speed bike?

The 8-speeds use what most folks would probably refer to as the “standard” gearing set-up on a bike – different-sized external cogs are shifted through by moving the chain with a derailleur (that thingy that hangs down with the “little pulley” on it that adjusts the chain's tension and slides it left and right to ...

Are Shimano and KMC chains compatible?

One of the main advantages of KMC chains is that they are compatible with Sram, Campagnolo, and Shimano drivetrains.

Are 9 and 10 speed cassettes the same width?

they are the same width. The distance between the 9 speed gears is ever so slightly wider than on a 10 speed cassette (hence why 10 speed chains need thinner side plates than 9 speed ones.

Can I use a 9 speed derailleur on a 11 speed cassette?

Depends on the pull ratio. 9 speed (or8,7,6) MTB mechs won't work with 10 or 11 speed shifters.

Can I convert my 8 speed bike to 10 speed?

Yes, it will fit fine. 8,9,10spd freehubs are the same. If it's road you're talking about then you'll need a 1mm spacer behind the cassette if it's Shimano, if it's MTB then it'll go straight on.

Will 11 speed chain work with 9 speed cassette?

9 and 11 speed chains will have the same internal width and different external width (9 speed being thicker), so they will both fit snugly on 9 or 11 speed chainrings but shifting between chainrings may be problematic as spacing between two 9 speed chainrings will be optimised for a 9 speed chain.