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The PRO Starnut Alloy is a reliable, high-quality star nut designed to keep your threadless headset securely preloaded and running smoothly. Installed inside a 1 1/8" steerer tube, a star nut works together with a top cap and bolt to apply the correct tension to your headset bearings before the stem is tightened. An alloy construction offers a strong, durable hold while keeping weight low, making it a great choice for riders who want dependable performance without unnecessary bulk.
Ideal for both road and mountain bikes that use alloy or steel steerer tubes, the PRO Starnut Alloy is a small but essential component in any cockpit setup or rebuild. It is commonly used when fitting a new fork, replacing a worn headset, or refreshing a tired front end. Easy to install with the appropriate star nut setting tool, it helps eliminate play in the headset, improves steering precision, and contributes to a solid, confidence-inspiring ride feel. Whether you are building a bike from the frame up or servicing your existing ride, this star nut is a workshop staple you can trust.
