---
product_id: 2487386
title: "Threadless Size Converter (1\" - 1 1/8\")"
brand: "profile design"
price: "₩65792"
currency: KRW
in_stock: true
category: "Profile Design"
url: https://www.desertcart.kr/products/2487386-threadless-size-converter-1-1-1-8
store_origin: KR
region: South Korea
---

# Polished silver finish for sleek style Ultra-lightweight at 0.8 oz Converts 1" to 1-1/8" threadless stems Threadless Size Converter (1" - 1 1/8")

**Brand:** profile design
**Price:** ₩65792
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your ride, convert with confidence!

## Quick Answers

- **What is this?** Threadless Size Converter (1" - 1 1/8") by profile design
- **How much does it cost?** ₩65792 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/2487386-threadless-size-converter-1-1-1-8)

## Best For

- profile design enthusiasts

## Why This Product

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

## Key Features

- • **Precision Fit:** Engineered for exact 25.4mm and 22.2mm quill diameters ensuring a flawless, secure installation every time.
- • **Elevate Your Ride:** Gain up to 25mm rise with spacers for enhanced comfort and control on every journey.
- • **Sleek Silver Shine:** Polished finish adds a premium, professional look that stands out on any bike.
- • **Seamless Stem Upgrade:** Effortlessly convert quill forks to modern threadless stems and join the cutting-edge cycling community.
- • **Featherlight Performance:** At just 0.8 ounces, enjoy a near-weightless upgrade that won’t slow your ride or your style.

## Overview

The Profile Design Threadless Size Converter is a precision-engineered adapter that converts 1" quill forks to 1-1/8" threadless stems. Weighing only 0.8 ounces, it offers a lightweight, durable solution with a polished silver finish. Compatible with 25.4mm and 22.2mm quill diameters, it allows up to 25mm rise increase when used with spacers, making it a must-have for cyclists seeking modern performance and style.

## Description

Profile Design Conversion has a polished silver finish. Features: For installing threadless stems on a threaded fork Approximately 25mm rise increase possible if used with spacers Polished silver finish Quill Insertion Diameter: 25.4mm for 1 1/8" stems and 22.2 for 1" stems Steerer Clamp OD 25.4mm, for 1", 28.6mm fir 1-1/8

## Features

- Converts all quill style forks to use threadless stems
- Converts 1 inch to 1-1/8" threadless
- Weight: 0.8 ounce

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0028N14GQ |
| Best Sellers Rank | #354,900 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #432 in Bike Stems |
| Brand Name | Profile Design |
| Color | Silver |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,270) |
| Date First Available | September 24, 2009 |
| Included Components | Stem Column Adaptor |
| Item Dimensions LxWxH | 5.75 x 1.25 x 1.5 inches |
| Item Package Dimensions L x W x H | 7.44 x 3.23 x 2.24 inches |
| Item Weight | 4 ounces |
| Manufacturer | Profile Design |
| Material | Multi |
| Model Name | Threadless Converter |
| Model Year | 2016 |
| Number of Items | 1 |
| Package Weight | 0.19 kg |
| Part Number | 15920002 |
| Style | Stem Column Adaptor |
| Suggested Users | All Ages/Unisex |
| Warranty Description | Limited Warranty |

## Images

![Threadless Size Converter (1" - 1 1/8") - Image 1](https://m.media-amazon.com/images/I/61hGhncU3oL.jpg)

## Questions & Answers

**Q: My kid lost that small base piece to his "20" Thruster Dirt DS Boys' Mountain Bike" Will this work as a replacement?**
A: It depends on the size of the steer tube and stem sizes. I'd the bike has a one inch threaded steer tube it'll work. But, you may have to get a new stem with a 1 1/8 inch collar.

**Q: how many spacers could be fit under this adapter?**
A: You don't use spacers for this. You only use spacers for a real threadless setup. This just emulates a threadless and allows you to use a 1-1/8 stem. You just set the height you want and tighten the allen bolt

**Q: what stem size does it fit? 1" or 1 1/8"**
A: 1 1/8".It inserts into forks with 1 1/8" threaded headsets (actual diameter measurement is 1"). It fits 1 1/8" threadless stems (1 1/8" actual measurement).

**Q: How high can you raise the stem above the headset?**
A: I have lifted my stem by 25mm from the top of the threaded steerer into which the extender inserts. Done roughly 2500km, including a 500km bike tour over gravel terrain - no issues whatsoever.

## Frequently Bought Together

- Profile Design Threadless Size Converter (1" - 1 1/8")
- SHIMANO Universal Standard Brake Cable Set, For MTB or Road Bikes
- Park Tool PolyLube 1000 Bicycle Grease

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**Shop now:** [https://www.desertcart.kr/products/2487386-threadless-size-converter-1-1-1-8](https://www.desertcart.kr/products/2487386-threadless-size-converter-1-1-1-8)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-10-01*