---
product_id: 47834198
title: "FIRESTIK K-4A CB RADIO ANTENNA HEAVY DUTY SO-239 STUD MOUNT (BULK)"
brand: "firestik"
price: "137.18 DT"
currency: TND
in_stock: true
reviews_count: 10
category: "Fire Stik"
url: https://www.desertcart.tn/products/47834198-firestik-k-4a-cb-radio-antenna-heavy-duty-so-239
store_origin: TN
region: Tunisia
---

# 50 Ohm impedance - optimal signal clarity Fits any 1/2" hole - universal mount Heavy duty SO-239 stud - rugged durability FIRESTIK K-4A CB RADIO ANTENNA HEAVY DUTY SO-239 STUD MOUNT (BULK)

**Brand:** firestik
**Price:** 137.18 DT
**Availability:** ✅ In Stock

## Summary

> 📡 Mount Up with FireStik – Signal Strength Meets Heavy-Duty Style!

## Quick Answers

- **What is this?** FIRESTIK K-4A CB RADIO ANTENNA HEAVY DUTY SO-239 STUD MOUNT (BULK) by firestik
- **How much does it cost?** 137.18 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/47834198-firestik-k-4a-cb-radio-antenna-heavy-duty-so-239)

## Best For

- firestik enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Heavy-duty SO-239 stud mount engineered for maximum durability under demanding conditions.
- • **Bulk Value Pack:** No retail packaging means you get more mount for less—perfect for pros and installers.
- • **Signal-Ready Design:** 50 Ohm impedance ensures crystal-clear CB radio communication every time.
- • **Compact & Lightweight:** 6" cube design weighing just 9 grams for easy installation without added bulk.
- • **Universal Compatibility:** Seamlessly fits all FireStik antennas and mounts for effortless upgrades.

## Overview

The FireStik K-4A Heavy Duty SO-239 Stud Mount is a robust, universal antenna mount designed to fit any 1/2" hole and all FireStik antennas. With a 50 Ohm impedance for optimal signal clarity and a compact 6"x6"x6" form factor, this bulk item offers professional-grade durability and performance, making it a top choice for serious CB radio users and installers.

## Description

FireStik HEAVY DUTY SO-239 STUD MOUNT for CB RADIO ANTENNA (BULK) K-4A

Review: Decent product, works as advertised. - High quality, very sturdy. Does rust a little bit after some time installed on vehicle.
Review: Work great - Huge difference over the factory mounts

## Features

- FOR ANY 1/2" HOLE
- FITS ALL FIRESTIK ANTENNAS AND MOUNTS
- BULK ITEM. NO RETAIL PACKAGE

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0765QHQMZ |
| Antenna | Radio |
| AntennaDescription | Radio |
| Best Sellers Rank | #103 in Two-Way Radio Accessories |
| Brand | FireStik |
| Color | Silver |
| Customer Reviews | 4.7 out of 5 stars 3,679 Reviews |
| Impedance | 50 Ohms |
| Item Dimensions L x W x H | 6"L x 6"W x 6"H |
| Item Weight | 9.07 g |
| Manufacturer | Firestik |
| Mfr Part Number | 4332975828 |
| Model Number | 13 |
| Number of Channels | 40 |
| Number of Items | 1 |
| Product Dimensions | 6"L x 6"W x 6"H |
| UPC | 714833139720 757183692668 |

## Product Details

- **Antenna:** Radio
- **Brand:** FireStik
- **Color:** Silver
- **Impedance:** 50 Ohms
- **Manufacturer:** Firestik
- **Number of Channels:** 40
- **Number of Items:** 1
- **Product Dimensions:** 6"L x 6"W x 6"H
- **UPC:** 714833139720 757183692668

## Images

![FIRESTIK K-4A CB RADIO ANTENNA HEAVY DUTY SO-239 STUD MOUNT (BULK) - Image 1](https://m.media-amazon.com/images/I/81MHTlwnrVL.jpg)

## Questions & Answers

**Q: In assembling in the mounting bracket, you have 3 washers. 1 flat, 1 locking and 1 plastic isolator. as far as the isolator, top or bottom?**
A: Antenna on top, then the plastic washer, then the metal mounting bracket, then the flat washer, then the locking washer. The antenna has to be isolated from the mounting bracket so make sure it is centered on the plastic washer or it will short out your system and the base of the antenna mount has to be grounded. 

You should check your SWR ratio before talking on your radio and if it is above 1.5 learn how to adjust it. If you know how to adjust it and still can not get a good reading try adding a ground wire from the antenna base to a metal ground. Certain trucks like the Mack Granite have isolated mirrors and require the ground wire.

**Q: I am looking to remove my firestik and put a ham antenna there. looks like this is the adapter? 3/8-24 rf female to sma female adapter**
A: This is 3/8 x 24 to SO239.

**Q: How would you mount these antennas behind the cab of a f 550 flat bed?**
A: You would need the L-bracket to mount to the back of the cab. If you bed has the security frame at the cab you can mount to that with a bracket.

**Q: how many come in the package?**
A: One and it sucks it fell apart using a 4 foot fire stick antenna

## Customer Reviews

### ⭐⭐⭐⭐⭐ Decent product, works as advertised.
*by C***R on January 1, 2026*

High quality, very sturdy. Does rust a little bit after some time installed on vehicle.

### ⭐⭐⭐⭐⭐ Work great
*by J***H on November 25, 2025*

Huge difference over the factory mounts

### ⭐⭐⭐⭐⭐ Perfect part
*by L***O on January 23, 2026*

The Perfect part for my setup!

## Frequently Bought Together

- FIRESTIK K-4A CB RADIO ANTENNA HEAVY DUTY SO-239 STUD MOUNT (BULK)
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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-08*