New To Sigma Sports?
£10 off £100* - code SIGNUP10

Colnago Fork Expander 1-1/8th

★★★★★ ★★★★★
Fork Expander 1-1/8th

We're sorry, but unfortunately, we're unable to ship this item to your country

Product ID: 701305

The Colnago Fork Expander 1-1/8th is a neat and simple product for compressing the headset in carbon steerers that can’t accept a star fangled nut.

It can either be used on its own, or the compression bolt will also accept a standard M6 bolt if a top cap is desired for aesthetics.

Colnago Fork Expander 1-1/8th

Made with Colnago’s usual attention to detail, the Fork Expander 1-1/8th is used inserted into the steerer tube to tighten the headset. Most modern carbon fork steerer tubes can’t accept a traditional star-fangled nut, either because it might damage and weaken the carbon or because the thickness of the carbon wall means that the internal diameter is too small. This fork expander is a safe and neat alternative.


  • Fork steerer diameter 1 1/8 inch
  • Weight 24 grams (approx)
  • Top cap can be fitted, but not necessary

Close menu