---
product_id: 288708444
title: "Profile Design Threadless Size Converter (1\" - 1 1/8\")"
brand: "profile design"
price: "S$1"
currency: SGD
in_stock: false
reviews_count: 1
url: https://www.desertcart.sg/products/288708444-profile-design-threadless-size-converter-1-1-1-8
store_origin: SG
region: Singapore
---

# Polished silver finish for sleek aesthetics Approx. 25mm rise increase with spacers Precision fit for 1" to 1-1/8" steerer conversion Profile Design Threadless Size Converter (1" - 1 1/8")

**Brand:** profile design
**Price:** S$1
**Availability:** ❌ Out of Stock

## Summary

> 🚴‍♂️ Elevate your ride with precision and style!

## Quick Answers

- **What is this?** Profile Design Threadless Size Converter (1" - 1 1/8") by profile design
- **How much does it cost?** S$1 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/288708444-profile-design-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

- • **Lightweight & Durable:** Crafted from premium materials to keep your bike agile without added bulk.
- • **Sleek Polished Finish:** Stand out with a high-gloss silver look that complements any bike style.
- • **Boost Your Ride Height:** Gain up to 25mm rise for enhanced comfort and control using spacers.
- • **Seamless Compatibility:** Effortlessly upgrade your bike with a perfect 1" to 1-1/8" threadless stem fit.
- • **Universal Fit for All Riders:** Designed unisex and compatible with most quill steerers for versatile use.

## Overview

The Profile Design Threadless Size Converter transforms a 1" quill steerer to fit a 1-1/8" threadless stem, featuring a polished silver finish and enabling up to 25mm rise increase with spacers. Lightweight and universally compatible, it’s the perfect upgrade for cyclists seeking enhanced fit and sleek aesthetics.

## 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

- Converter: 1 inch Quill steerer to 1-1/8 inch threadless stem
- Department name: Unisex; Included components: Stems & Converters

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | silber |
| Size | One Size |
| Hand Orientation | Right |
| Height | 1 inches |
| Length | 8 inches |
| Width | 3.25 inches |
| Shape | Round |
| Material Type | Plastic |
| Number of Items | 1 |
| Usage | Bicycle |
| Sport | Cycling |
| Included Components | Stems & Converters |
| Batteries Included? | No |
| Brand | Profile Design |
| Department | Unisex |
| Manufacturer | Profile Design |
| Language | English |
| Item model number | ACTHRCONKT18 |
| Product Dimensions | 14.61 x 3.18 x 3.81 cm; 113.4 g |
| ASIN | B0028N14GQ |

## Images

![Profile Design Threadless Size Converter (1" - 1 1/8") - Image 1](https://m.media-amazon.com/images/I/61hGhncU3oL.jpg)
![Profile Design Threadless Size Converter (1" - 1 1/8") - Image 2](https://m.media-amazon.com/images/I/51i450z0XTL.jpg)
![Profile Design Threadless Size Converter (1" - 1 1/8") - Image 3](https://m.media-amazon.com/images/I/61aBUwqwwEL.jpg)
![Profile Design Threadless Size Converter (1" - 1 1/8") - Image 4](https://m.media-amazon.com/images/I/21zHVEkSajL.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.

## Customer Reviews

### ⭐ Wrong size in packaging
*by E***G on 24 March 2022*

It is 1"(25.4mm) -1/8 on the packaging but actual item inside is 22.2 diameter. What I needed is bigger diameter not this one that I received☹️☹️☹️

## 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.sg/products/288708444-profile-design-threadless-size-converter-1-1-1-8](https://www.desertcart.sg/products/288708444-profile-design-threadless-size-converter-1-1-1-8)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-17*