Wheels Manufacturing Cassette Body Spacer

A 7-speed cassette is physically narrower than the 8, 9, or 10-speed freehub bodies found on most modern wheels. Without this 4.5mm spacer, the cassette lockring will not be able to tighten down fully, leaving the cassette loose and unable to shift properly.

Yes, this spacer is designed to work with standard Shimano-compatible 7-speed cassettes. It provides the necessary 4.5mm of width to bridge the gap on an 8 or 9-speed freehub body.

This specific spacer is designed for 8 and 9-speed freehub bodies. While it may physically fit on some 10-speed bodies, you would likely need additional spacers to achieve the correct width, as 10-speed bodies are often slightly different in length.

No, the spacer itself does not affect shifting. Its sole purpose is to ensure the cassette is positioned correctly on the hub so that your derailleur can align properly with each cog. Once installed, your shifting performance will depend on your derailleur adjustment and cable tension.

The pack of five is intended for shop mechanics or enthusiasts working on multiple bikes or restoration projects. It ensures you have spares on hand if you are servicing several wheels or experimenting with different drivetrain setups.