Cassette spacer Shimano Sram for freewheel 11s Fulcrum Campagnolo

Shimano cassette spacer – adapter for 11-speed Fulcrum / Campagnolo freehub body

Optimize your drivetrain setup with this Shimano cassette spacer, essential for fitting a Shimano / Sram 10-speed cassette onto an 11-speed Fulcrum or Campagnolo freehub body. It ensures a precise, secure fit with no unwanted play, delivering smooth and quiet pedaling.

What is this spacer used for ?

Modern wheels equipped with 11-speed freehubs are longer than older 9/10-speed versions. To mount a 10-speed cassette, a spacer is required to fill the extra space. This adapter sits between the cassette and the freehub, providing:

• Perfect drivetrain alignment

• Correct chain tension

• Accurate and responsive shifting

Features

• Cassette Compatibility: Shimano / Sram 10-speed

• Freehub Compatibility: Fulcrum & Campagnolo 11-speed standard

• Material: Precision-machined aluminum or treated steel (depending on model)

• Thickness: 1.75 mm (standard size for 10v → 11v conversion)

• Installation: Quick and easy, no modification required

Technical benefits

• Allows you to reuse your 10-speed cassette on newer 11-speed wheelsets

• Maintains chainline integrity and proper shifter indexing

• Suitable for road and mountain bike drivetrains (depending on cassette ratio)

• Lightweight, with no impact on wheel balance or performance

Why choose this spacer ?

Whether you’re updating your wheelset or repurposing existing drivetrain components, this Shimano cassette spacer provides the simplest and most reliable way to maintain smooth gear shifting and extend the lifespan of your transmission.