---
product_id: 57221098
title: "XLC CR-A03 Kettenspanner"
brand: "xlc"
price: "$U3939"
currency: UYU
in_stock: true
reviews_count: 13
category: "Xlc"
url: https://www.desertcart.uy/products/57221098-xlc-cr-a03-kettenspanner
store_origin: UY
region: Uruguay
---

# Durable derailleur hanger fastening 16-20 teeth precision fit Optimized for single-speed hubs XLC CR-A03 Kettenspanner

**Brand:** xlc
**Price:** $U3939
**Availability:** ✅ In Stock

## Summary

> ⚡ Never lose your chain, never lose your edge.

## Quick Answers

- **What is this?** XLC CR-A03 Kettenspanner by xlc
- **How much does it cost?** $U3939 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/57221098-xlc-cr-a03-kettenspanner)

## Best For

- xlc enthusiasts

## Why This Product

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

## Key Features

- • **Robust Aluminium Build:** Lightweight yet ultra-sturdy aluminium construction for long-lasting performance.
- • **Year-Round Reliability:** Engineered to perform flawlessly across all seasons and terrains.
- • **Effortless Installation:** Fastens directly at the derailleur hanger for a clean, professional setup.
- • **Unshakable Chain Security:** Keep your chain locked in place even on the wildest jumps and pump tracks.
- • **Precision Fit for Single-Speed Hubs:** Designed specifically for 16-20 teeth single-speed setups—no compromises.

## Overview

The XLC CR-A03 Kettenspanner is a high-quality aluminium chain tensioner designed for single-speed hubs with 16-20 teeth. It fastens securely at the derailleur hanger, ensuring your chain stays perfectly tensioned during aggressive riding like pump tracks and jumps. Lightweight at 200g and built for year-round use, it offers a durable, reliable upgrade for cyclists seeking performance and peace of mind.

## Description

Shop XLC Unisex Cr-a03 Chain Tensioner, Black, One Size UK. Free delivery and returns on all eligible orders.

Review: Chain stays on even on massive jumps - My son is extremely happy that his chain now never accidentally comes off. He does a lot of pump tracks with big jumps etc. This tensioner does the job and was not expensive.
Review: Great quality - Bought after a cheaper off-brand one broke. This feels 10x more sturdy. Strong spring also.

## Features

- 16-20 teeth
- For single-speed hubs
- Not suited to backpedal hubs
- Fastening at the derailleur hanger
- nt suitable for coaster brakes

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002NNEQOI |
| Batteries included? | No |
| Best Sellers Rank | 40,443 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 110 in Cycling Chains |
| Brand | XLC |
| Color | Black |
| Customer Reviews | 4.2 4.2 out of 5 stars (472) |
| Date First Available | 14 July 2011 |
| Department | Unisex |
| Included components | XLC Chain Tensioner |
| Is discontinued by manufacturer | No |
| Item display length | 18.39 centimetres |
| Item model number | 2501106000 |
| Manufacturer | XLC |
| Material type | Aluminium |
| Product Dimensions | 12 x 18.5 x 5.5 cm; 115 g |
| Seasons | Year-round |
| Size | One Size |
| Sport | Cycling |
| Weight | 200 g |

## Product Details

- **Brand:** XLC
- **Load capacity:** 2.5E+2 Pounds
- **Material:** Aluminium
- **Roller diameter:** 32 Millimeters
- **Strand type:** Einfach

## Images

![XLC CR-A03 Kettenspanner - Image 1](https://m.media-amazon.com/images/I/71h5IeTZ8RL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Chain stays on even on massive jumps
*by M***E on 2 November 2025*

My son is extremely happy that his chain now never accidentally comes off. He does a lot of pump tracks with big jumps etc. This tensioner does the job and was not expensive.

### ⭐⭐⭐⭐⭐ Great quality
*by T***N on 16 October 2025*

Bought after a cheaper off-brand one broke. This feels 10x more sturdy. Strong spring also.

### ⭐⭐⭐⭐ Arrived promptly and in perfect condition. Good price.
*by M***E on 12 July 2021*

I bought it to allow maintenance of chain tension on a hub geared bike without moving the hub in the dropouts. Seems to work pretty well. It is not ideal for this function because the lateral adjustment is at it’s absolute inmost limit. I think it’s designed to allow a multi sprocketed bike to be used as single speed. For my purposes it would be better if the main arm slanted inwards to naturally align the tensioning jockey wheel with the sprocket of the gear. Despite this I am very happy to use it on my bike and won’t change it unless I discover a better alternative.

## Frequently Bought Together

- XLC CR-A03 Kettenspanner
- Bike Single Speed Fixie Cassette Conversion Kit Compatable Shimano 18T Colors

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**Shop now:** [https://www.desertcart.uy/products/57221098-xlc-cr-a03-kettenspanner](https://www.desertcart.uy/products/57221098-xlc-cr-a03-kettenspanner)

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-07*