Stan's E-Sync freehub bodies are the newest generation of freehubs from Stan's.   E-Sync freehubs are a direct replacement for Stan's No Tubes Durasync and Speedsync freehubs.

Compatibility:

Stan's No Tubes E-Sync freehubs are compatible with the following:

• Hub: Stan's No Tubes E-Sync & Neo hubs
• Cassette:   Shimano HG, Shimano Microspline and SRAM XD compatible cassettes.