There’s a lot of misinformation out there about compatibility between 8 and 9 speed drivetrains. The bottom line is that you can use a 9 speed derailleur with an 8 speed cassette, but there are a few things you need to know. First, the 9 speed derailleur will work with an 8 speed cassette, but you will need to use a 9 speed chain.

Second, the 9 speed derailleur will have slightly less ground clearance than an 8 speed derailleur, so you may need to make some adjustments to your frame or fork. Third, the 9 speed derailleur will also work with a 7 speed cassette, but you will need to use a 7 speed chain. Fourth, the 9 speed derailleur will have slightly more ground clearance than a 7 speed derailleur, so you may need to make some adjustments to your frame or fork.

  • Check that your 8 speed cassette is compatible with a 9 speed derailleur
  • Most 8 speed cassettes will work with a 9 speed derailleur, but it’s always best to check before proceeding
  • Remove the old cassette from the wheel
  • Install the new cassette onto the wheel
  • Adjust the derailleur so that it lines up with the new cassette
  • Test ride the bike to make sure everything shifts smoothly

Shimano Shifter / Derailleur Compatibility Guide: Intro to Cable Pull Ratios

Will 9 speed shifter work with 8 speed cassette?

There is a lot of confusion out there about compatibility between 8 and 9 speed shifters and cassettes. The bottom line is that an 8 speed cassette will work with a 9 speed shifter, but a 9 speed shifter will not work with an 8 speed cassette. The reason for this is that the 9 speed shifter has a larger ratchet mechanism that is not compatible with the 8 speed cassette.

So, if you have an 8 speed cassette and want to use a 9 speed shifter, you’ll need to get a new cassette as well.

Can I use a 9 speed rear mech with an 8 speed cassette?

The simple answer is yes, you can use a 9 speed rear mech with an 8 speed cassette. However, there are a few things to consider before doing so. Firstly, the 9 speed rear mech will have slightly longer cage than the 8 speed, meaning that it may not be able to take up all the slack in the chain when shifting to the smaller cog at the back.

This could result in the chain coming off the cassette, so it’s something to be aware of. Secondly, the 9 speed mech will also have slightly different shifter compatibility. It’s likely that you’ll need to use a 9 speed shifter rather than an 8 speed one, as the cable pull ratio is different.

Overall, it’s perfectly possible to use a 9 speed rear mech with an 8 speed cassette, but there are a few things to bear in mind.

Are Shimano 8 and 9 speed compatibility?

There are a few key things to know when it comes to compatibility between Shimano 8 and 9 speed components. First, it’s important to know that 8 and 9 speed Shimano drivetrains are not compatible with each other. This means that you cannot mix and match 8 and 9 speed components on the same bike.

Second, while 8 and 9 speed Shimano drivetrains are not compatible with each other, they are compatible with other brands of drivetrains. This means that you can mix and match Shimano 8 and 9 speed components with components from other brands, such as SRAM. Third, while 8 and 9 speed Shimano drivetrains are not compatible with each other, they are compatible with each other’s parts.

This means that you can use Shimano 8 speed shifters with Shimano 9 speed derailleurs, or Shimano 9 speed shifters with Shimano 8 speed derailleurs.

Can I use 9 speed derailleur with 7 speed cassette?

The quick answer is yes, you can use a 9 speed derailleur with a 7 speed cassette. Just be sure to also use a 9 speed chain. The reason this works is because the chain pitch is the same for both 9 and 7 speed chains.

The difference is in the width of the inner and outer plates. 9 speed chains are narrower than 7 speed chains, so they will fit onto a 7 speed cassette. However, using a 9 speed derailleur with a 7 speed cassette is not ideal.

The reason for this is that the derailleur was designed to work with a 9 speed chain, which is a different width than a 7 speed chain. This means that the derailleur is not perfectly aligned with the 7 speed cassette, which can lead to shifting problems.

can i use 9 speed derailleur with 8 speed cassette

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8 speed chain on 9 speed derailleur

If you’re looking to upgrade your bike’s gearing, you may be wondering if you can use an 8 speed chain on a 9 speed derailleur. The answer is yes, you can! However, there are a few things to keep in mind.

First, 8 speed chains are narrower than 9 speed chains. This means that they may not fit perfectly into the teeth of the derailleur pulleys. However, this is not a big deal and should not cause any problems.

Second, 8 speed chains are not as strong as 9 speed chains. This means that they may stretch more over time and may eventually break. However, if you take good care of your chain and don’t ride too hard, this shouldn’t be an issue.

Overall, using an 8 speed chain on a 9 speed derailleur is perfectly fine. Just be aware of the potential issues and take good care of your chain.

Conclusion

You can use a 9 speed derailleur with 8 speed cassette, but you may need to make some adjustments. The main difference between 8 and 9 speed cassettes is the spacing between the cogs. 9 speed cassettes have narrower spacing, so the derailleur may need to be adjusted to accommodate the narrower cogs.

Additionally, you may need to use a different chain with a 9 speed derailleur. 8 speed chains are not compatible with 9 speed derailleurs.

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