---
product_id: 181112877
title: "Neco Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut Bolt Carbon Fiber Cap Cover Long Large Size (Extra Large Alu Cap 1-1/8)"
brand: "neco"
price: "€ 35.82"
currency: EUR
in_stock: true
reviews_count: 10
category: "Neco"
url: https://www.desertcart.at/products/181112877-neco-headset-expander-top-cap-star-nut-plug-bolt-stem
store_origin: AT
region: Austria
---

# Fits 1-1/8'' (28.6 mm) forks 80 mm length for secure stem fit Strong compression for carbon & aluminum Neco Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut Bolt Carbon Fiber Cap Cover Long Large Size (Extra Large Alu Cap 1-1/8)

**Brand:** neco
**Price:** € 35.82
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Upgrade your ride with Neco’s powerhouse headset expander — where strength meets precision!

## Quick Answers

- **What is this?** Neco Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut Bolt Carbon Fiber Cap Cover Long Large Size (Extra Large Alu Cap 1-1/8) by neco
- **How much does it cost?** € 35.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/181112877-neco-headset-expander-top-cap-star-nut-plug-bolt-stem)

## Best For

- neco enthusiasts

## Why This Product

- Trusted neco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Fit for Pro Riders:** Extra large 1-1/8'' size ensures seamless compatibility with high-end forks.
- • **Unmatched Carbon Fiber Protection:** Strong compressor plug safeguards your carbon tube without compromise.
- • **Trusted Legacy, Proven Performance:** Backed by Neco’s 30+ years of cycling innovation and quality assurance.
- • **Heavy-Duty Strength at a Smart Price:** Robust aluminum construction delivers industrial-grade durability without breaking the bank.
- • **Effortless Installation & Reliability:** Star nut design for aluminum forks ensures zero-slip, torque-ready setup every ride.

## Overview

The Neco Headset Expander Top Cap Star Nut Plug is engineered for serious cyclists demanding durability and precision. Designed for 1-1/8'' (28.6 mm) forks with an 80 mm length, it features a strong compression plug ideal for carbon fiber tubes and a star nut for aluminum forks. Crafted from high-quality aluminum and carbon fiber materials, this expander offers industrial-grade strength and a polished satin finish. Trusted by professionals and backed by over 30 years of Neco’s expertise, it delivers reliable, budget-friendly performance for heavy-duty cycling.

## Description

Neco Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut Bolt Carbon Fiber Cap Cover Long Large Size (Extra Large Alu Cap 1-1/8 inch)The Neco headset compressor nut is best expander for your carbon bike and aluminum bike. While other headset star nut is only for metal fork tube, not works with carbon fiber tube. Neco is world class bike components supplier with over 30 years history.FeaturesExtra Large sizeis for 1-1/8'' (28.6 mm) fork.Inner diameter 22-25.4mm.Length: 3.1 inch (80 mm).STRONG COMPRESSOR - Compression plug is good for carbon tube, it offers stronger force and can protect the carbon tube as well. (Star nut is only for aluminum tube)Bigger compressor is more stronger and safety. Strong enough but budget cost.Neco 100% original, high quality components and surface treatment, excellent strength for all heavy duty cycling.About NecoNECO - Professional Bike Parts ManufacturersNeco Technology Industry Co. Ltd., founded in 1986, have been in the forefront of machinery tooling design and development. Having acquired more than 30 years of experience in the cycling field.Neco will always strive to meet the commitments to all of the customers and provide competitive, high-value products.

Review: Good expander for upsizing - Great expander for the price! Functions and fits as it should and torqued down with zero issues.
Review: Great product - Great product, I was able to repair my bike and get it back on the road

## Features

- Extra Large size is for 1-1/8'' (28.6 mm) fork.
- Inner diameter 22-25.4mm. Length: 3.1 inch (80 mm).
- STRONG COMPRESSOR - Compression plug is good for carbon tube, it offers stronger force and can protect the carbon tube as well. (Star nut is only for aluminum tube)
- Bigger compressor is more stronger and safety. Strong enough but budget cost.
- Neco 100% original, high quality components and surface treatment, excellent strength for all heavy duty cycling.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B083G4TLCP |
| Best Sellers Rank | #478,161 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #296 in Bike Headsets |
| Brand | Neco |
| Color | Extra Large Alu cap 1-1/8 |
| Compatible Groove Diameter | 22 Millimeters |
| Customer Reviews | 4.3 out of 5 stars 89 Reviews |
| Drive Style | Star |
| Exterior Finish | Polished |
| Fastener Type | Acorn |
| Finish Type | Satin |
| Finish Types | Satin |
| Grade Rating | Industrial |
| Inside Thread Size | M22 |
| Item Diameter | 25.4 Millimeters |
| Item Weight | 70 Grams |
| Manufacturer | Neco |
| Material | Aluminum, Carbon Fiber |
| Material Type | Aluminum, Carbon Fiber |
| Metal Type | Aluminum |
| Model | headset compression nut |
| Number of Pieces | 1 |
| Part Number | headset compression nut |
| Screw Head Style | Flat |
| Size Name | Extra Large Alu Cap 1-1/8 |
| Thread Class | Class 2A |
| Thread Style | Right Hand |
| Thread Type | Unified National Coarse (Unc) |
| UPC | 782899743878 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 year |

## Product Details

- **Material:** Aluminum, Carbon Fiber
- **Fastener Type:** Acorn
- **Exterior Finish:** Aluminum
- **Color:** Extra Large Alu cap 1-1/8
- **Metal Type:** Aluminum

## Images

![Neco Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut Bolt Carbon Fiber Cap Cover Long Large Size (Extra Large Alu Cap 1-1/8) - Image 1](https://m.media-amazon.com/images/I/611GofkTmuL.jpg)
![Neco Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut Bolt Carbon Fiber Cap Cover Long Large Size (Extra Large Alu Cap 1-1/8) - Image 2](https://m.media-amazon.com/images/I/618sFWPeH4L.jpg)
![Neco Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut Bolt Carbon Fiber Cap Cover Long Large Size (Extra Large Alu Cap 1-1/8) - Image 3](https://m.media-amazon.com/images/I/61zaCQ1qCHL.jpg)
![Neco Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut Bolt Carbon Fiber Cap Cover Long Large Size (Extra Large Alu Cap 1-1/8) - Image 4](https://m.media-amazon.com/images/I/61QlFmRd+OL.jpg)
![Neco Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut Bolt Carbon Fiber Cap Cover Long Large Size (Extra Large Alu Cap 1-1/8) - Image 5](https://m.media-amazon.com/images/I/6132Q-YXIJL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good expander for upsizing
*by K***R on March 30, 2026*

Great expander for the price! Functions and fits as it should and torqued down with zero issues.

### ⭐⭐⭐⭐⭐ Great product
*by D***A on February 9, 2026*

Great product, I was able to repair my bike and get it back on the road

### ⭐⭐⭐⭐ Works great.
*by E***E on June 15, 2023*

I bought the long one for my carbon steerer tube, and it is working fine with the extension I put on. I figure it'll give the tube some beef to strengthen it.

## Frequently Bought Together

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-07-11*