WHEELS Mfg StackRight Headset Spacer

These spacers are designed specifically for 1-1/8 inch fork steerer tubes, which is the standard size for most modern mountain and road bikes. If your bike uses a tapered or straight 1-1/8 inch steerer, these will fit perfectly.

The interlocking channels prevent the spacers from shifting or misaligning while you are tightening your stem. This ensures the stack remains perfectly centered and stable, creating a cleaner look and a more secure cockpit assembly.

The seven-piece set includes two 10mm spacers, one 5mm spacer, two 2.5mm spacers, and two 1.5mm spacers. This variety allows you to fine-tune your stem height with precision.

Yes, these 6061 aluminum spacers are safe to use with carbon fiber steerer tubes. Just ensure your stem is properly torqued to the manufacturer's specifications to avoid damaging the carbon.

While you can physically stack them with other spacers, the unique interlocking feature only works when these specific spacers are used together. For the best alignment and aesthetic, it is recommended to use the full set.