Stem Spares

Bicycle stem spares help maintain smooth steering and accurate bearing preload. Star nuts are fitted into the steerer tube and allow the top cap bolt to tension the headset before the stem clamps everything in place. They are typically used on steel or aluminium forks, while carbon steerer tubes use alternative compression plugs. Headset spacers sit between the stem and headset, allowing height adjustment and fine-tuning of rider fit without cutting the steerer. Available in alloy, carbon, and plastic, they come in various thicknesses. Together, these small components make headset servicing, adjustment, and customisation simple and reliable.