1 inch 1/8 Woodman bike headset cap and star for stem

Woodman stem star nut and top cap for 1 1/8" headset

The Woodman stem star nut and top cap are essential components for installing or replacing a headset on a bicycle equipped with a 1 1/8" (28.6 mm) threadless fork steerer. Designed to provide secure headset preload and a clean finish, this kit is suitable for road bikes, mountain bikes, gravel bikes, hybrid bikes, and city bikes with an aluminum steerer tube.

Made from aluminum with a sleek black finish, this lightweight and durable set offers excellent corrosion resistance. It is supplied brand new in its original packaging, ready for installation.

An essential component for headset adjustment

The star nut is inserted into the inside of the fork steerer, allowing the top cap bolt to apply the correct preload to the headset bearings before the stem bolts are tightened.

Proper installation helps to:

• eliminate headset play;

• ensure smooth steering;

• improve handling precision;

• extend the lifespan of the headset bearings.

The top cap also provides a clean, professional appearance while protecting the inside of the steerer tube.

Technical specifications

• Brand: Woodman

• Product Type: Star nut and stem top cap

• Compatibility: 1 1/8" (28.6 mm) threadless fork steerer

• Material: Aluminum

• Color: Black

• Condition: Brand new in original packaging

Compatible with many bicycle types

With its 1 1/8" standard size, this kit is compatible with most modern bicycles featuring a threadless aluminum fork steerer, including:

• Mountain bikes (XC, trail, enduro)

• Road bikes

• Gravel bikes

• Hybrid and trekking bikes

• City bikes

Before purchasing, ensure that your bicycle uses a 1 1/8" (28.6 mm) threadless steerer tube.

Why choose Woodman ?

Woodman is well known for manufacturing high-quality bicycle headset and steering components. This kit offers several advantages:

• Lightweight and durable aluminum construction

• High-quality machining and finish

• Easy installation

• Elegant black finish that complements any cockpit

• Reliable performance for both recreational and competitive cycling

Installation tips

For best results, install the star nut using a dedicated star nut setting tool to ensure correct alignment and insertion depth. Once installed, the top cap is used to preload the headset bearings before tightening the stem clamp bolts.

Important: A star nut is designed for aluminum or steel fork steerers only. It must not be used with carbon fiber steerers, which require a compression plug (expander).

Summary

The Woodman 1 1/8" (28.6 mm) Star Nut and Stem Top Cap is a reliable solution for assembling or servicing a threadless headset. Its black aluminum construction, broad compatibility, and premium manufacturing quality make it an excellent choice for cyclists looking for a lightweight, durable, and easy-to-install headset component.