---
product_id: 279825251
title: "Black Ops MX BMX Quill Stem, 21.1"
brand: "black ops"
price: "Bs.3171"
currency: BOB
in_stock: true
category: "Black Ops"
url: https://www.desertcart.bo/products/279825251-black-ops-mx-bmx-quill-stem-21-1
store_origin: BO
region: Bolivia
---

# 4-bolt clamp for max stability 21.1mm precision quill diameter Alloy/Steel blend for durability Black Ops MX BMX Quill Stem, 21.1

**Brand:** black ops
**Price:** Bs.3171
**Availability:** ✅ In Stock

## Summary

> ⚡ Own the streets with precision and power!

## Quick Answers

- **What is this?** Black Ops MX BMX Quill Stem, 21.1 by black ops
- **How much does it cost?** Bs.3171 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/279825251-black-ops-mx-bmx-quill-stem-21-1)

## Best For

- black ops enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable alloy and steel construction withstands the toughest BMX rides and tricks.
- • **Pro-Grade Weight:** Lightweight 549g stem balances strength and agility for peak performance.
- • **Rock-Solid Control:** 4-bolt clamp design locks your handlebars firmly in place, no wobble guaranteed.
- • **Sleek Stealth Black:** Matte black finish adds a bold, professional look to your bike’s cockpit.
- • **Precision Fit, Zero Slippage:** 21.1mm quill diameter ensures a perfect, secure fit for your BMX setup.

## Overview

The Black Ops MX BMX Quill Stem 21.1 is a high-performance BMX bike stem crafted from a durable alloy and steel blend. Featuring a 21.1mm quill diameter and a 4-bolt clamp system, it guarantees a secure, wobble-free handlebar fit. Weighing just 549 grams and finished in sleek black, it combines strength, lightweight design, and style—perfect for serious BMX riders seeking reliability and control.

## Description

STEM MX BK-OPS BP 21.1 BLACK

## Features

- Material Alloy/Steel
- 4 bolt clamp
- 21.1mm Dia. quill
- 4-1/4" Steerer
- Bar Clamp: 22.2

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000AOA6V4 |
| Bike Type | BMX Bike |
| Brand Name | Black Ops |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (208) |
| Item Weight | 549 g |
| Manufacturer | BLACK OPS |
| Manufacturer Part Number | 57417 |
| Material Type | Metal |
| Model Number | 57417JB |
| Number of Items | 1 |
| UPC | 072774574179 |

## Product Details

- **Brand:** Black Ops
- **Colour:** Black
- **Item weight:** 549 g
- **Manufacturer:** BLACK OPS
- **Material:** Metal

## Images

![Black Ops MX BMX Quill Stem, 21.1 - Image 1](https://m.media-amazon.com/images/I/61VNzTtGj+L.jpg)
![Black Ops MX BMX Quill Stem, 21.1 - Image 2](https://m.media-amazon.com/images/I/31zBbXIV9xL.jpg)

## Available Options

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

## Frequently Bought Together

- Black Ops MX BMX Quill Stem, 21.1
- GPMTER Bike Handlebar Grips, Single Lock on Bicycle Handle Bar, for BMX, Mountain, MTB, Beach Cruiser, Scooter, Folding Bike, Soft Non-Slip-Rubber Hand Grip Comfortable Ergonomic
- BMX Handlebars Bike Handlebar Steel Bicycle Handle Bars Bicycle Parts Universal Fits Bikes 22.2mm Bar End 9.4'' Rise 29.1'' Length Black

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**Shop now:** [https://www.desertcart.bo/products/279825251-black-ops-mx-bmx-quill-stem-21-1](https://www.desertcart.bo/products/279825251-black-ops-mx-bmx-quill-stem-21-1)

---

*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-08-30*