Bike Top Cap and Star Nut Set

tar Nut Set – Essential Headset Compression Kit for Bicycles

The bicycle headset star nut set is an essential component when installing headsets and forks (especially aluminum or steel steerer tubes). This kit firmly secures the stem and headset, completely eliminating play or wobble during rides.

Detailed Specifications:

• Product Name: Bicycle Headset Star Nut Set / Fork Star Nut Kit

• Package Includes:

  • $1 \times$ Spring steel star nut ($28.6\text{ mm} \ / \ 1\text{-}1/8"$)

  • $1 \times$ Headset top cap (Select option when ordering)

  • $1 \times$ Heavy-duty silver-plated hex bolt

• Materials:

  • Star Nut: High-grip steel to prevent slippage

  • Top Cap: Ultra-lightweight aluminum alloy with a durable powder-coated finish

  • Bolt: High-tensile, rust-resistant steel

• Standard Size: Fits most standard bicycle forks on the market (steerer tube outer diameter: $28.6\text{ mm} \ / \ 1\text{-}1/8"$).

• Applications: Compatible with sports bikes, road bikes, mountain bikes (MTB), touring bikes, etc. (Best suited for steel and aluminum steerer tubes).

Key Features:

• Ultra-Secure Grip: Features a smart two-tier flared leaf design that bites firmly into the inner wall of the steerer tube, ensuring a tight compression without slipping.

• Sleek Finish: The minimalist aluminum top cap with a smooth black finish adds a clean, rugged look to your cockpit.

• Easy Installation & Maintenance: Compatible with standard Allen keys for precise and hassle-free headset adjustment.

Important Note:

• When installing the star nut, it is recommended to use a specialized star nut setter tool to ensure it goes in straight and even.

• Recommended for steel/aluminum steerer tubes only. (Do not use directly on carbon steerer tubes—use a dedicated carbon expander plug instead).