---
product_id: 724019369
title: "51KSC6504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 6.5\" (160mm) Polypropylene Woofer/Midrange, 3/4\" (20mm) Silk-Dome Tweeters, 100 Watts RMS, 200 Watts Peak"
brand: "kicker"
price: "€ 366.53"
currency: EUR
in_stock: true
reviews_count: 5
category: "Kicker"
url: https://www.desertcart.sk/products/724019369-51ksc6504-coaxial-speaker-system-2-way-design-one-1-pair
store_origin: SK
region: Slovakia
---

# 90dB sensitivity 1.8" ultra-thin mount 100W RMS power 51KSC6504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 6.5" (160mm) Polypropylene Woofer/Midrange, 3/4" (20mm) Silk-Dome Tweeters, 100 Watts RMS, 200 Watts Peak

**Brand:** kicker
**Price:** € 366.53
**Availability:** ✅ In Stock

## Summary

> 🎶 Upgrade your ride’s soundtrack—don’t just drive, perform!

## Quick Answers

- **What is this?** 51KSC6504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 6.5" (160mm) Polypropylene Woofer/Midrange, 3/4" (20mm) Silk-Dome Tweeters, 100 Watts RMS, 200 Watts Peak by kicker
- **How much does it cost?** € 366.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/724019369-51ksc6504-coaxial-speaker-system-2-way-design-one-1-pair)

## Best For

- kicker enthusiasts

## Why This Product

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

## Key Features

- • **Effortless OEM Fit:** Ultra-thin 1.8" mounting depth fits seamlessly behind factory grilles—no dash mods needed.
- • **Plug & Play Installation:** Includes mounting hardware and integrated crossover for quick, hassle-free setup.
- • **Durable Build for the Road:** Polypropylene woofers with rubber surrounds ensure long-lasting, punchy bass on every drive.
- • **Precision Sound Engineering:** 90dB sensitivity and 43Hz-21kHz frequency response deliver rich, balanced audio.
- • **Concert-Level Volume & Clarity:** Experience crystal-clear highs and deep mids with 100 Watts RMS power and silk-dome tweeters.

## Overview

The KICKER 51KSC6504 is a premium 2-way coaxial speaker pair designed for automotive use, featuring 6.5" polypropylene woofers and 0.75" silk-dome tweeters. With 100 Watts RMS (200 Watts peak) power handling, 90dB sensitivity, and an ultra-thin 1.8" mounting depth, it delivers concert-level sound clarity and volume while fitting effortlessly into most factory speaker locations. Ideal for GM, Ford, Chrysler, Jeep, Dodge, and import vehicles, it combines durability with easy installation for an elevated in-car audio experience.

## Description

KICKER KS-Series Speakers let you play at concert-like volume, yet maintain the smoothness and subtlety to please even the most selective ear. The high-performance woofers utilize internally dampened polypropylene cones and tough rubber surrounds for outstanding midrange detail and pounding bass! All KS-Series woofers feature an ultra-slim mounting depth to easily fit in most factory speaker locations.

Review: Best OEM replacements - Best set of speakers to fit into and replace oem Subaru liberty GT my10 dash mid range speakers.
Review: Great sound quality and Fits in a Jeep JL - 51KSC3504 Fits perfectly without modifications in the front upper dashboard position of a Jeep Wrangler JL. Installs in a short time especially if you buy a tweeter plug and play adapter harness. It really fills out the sound as compared to the stock 2.5" speakers. I also got the 4" 51KSC404 to replace the knee panel speakers on the Jeep JL and I wanted to keep the existing speaker pods versus tear apart the complete dash. The three screw adapter ring these come with matches the jeep stock pods, but the speaker base is slightly wider than the OEM hole so I had to grind out about 1/8" of plastic from the factory pods. It only took about 5 minutes per pod so it wasn't horrible, but make sure you have something you can remove some plastic with to make these seat fully into the pod. Sound is great and really fills out the base from the front of the vehicle.

## Features

- The 51KSC6504 2-Way Coaxial Speaker System mounts effortlessly in select domestic and import models, thanks to an ultra-thin speaker design and integrated crossover. The coaxial system combines easy installation and acoustic perfection to achieve Concert-Level realism and volume.
- 6.5" (160mm) Polypropolene Woofer/Midrange with tough Rubber Surround fits select GM, Ford, Chrysler, Jeep, Dodge and Imports.
- 3/4" (20mm) Neodymium Silk-Dome tweeters coaxially mounted for a smooth sound. Tweeter protrusion of 0" (0mm) above the speaker frame.
- Thin-mount design easily fits behind factory grilles; 1-13/16" (46mm) mounting depth. Grilles and hardware included.
- Recommended Amplifier Power: 15 - 100 Watts RMS | Peak Power Handling: 200 Watts | Sensitivity: 90dB 1W/1M | Frequency Response: 43 Hz - 21 kHz | Nominal Impedance: 4-Ohms

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRLGQBCN |
| Antenna Location | Automotive |
| Audio Driver Size | 6.5 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Audio output mode | Stereo |
| Best Sellers Rank | 36,112 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 100 in Coaxial Car Speakers |
| Box Contents | Two (2) speakers, Mounting Hardware, Instructions Manual |
| Brand | KICKER |
| Brand Name | KICKER |
| Colour | white |
| Compatible Devices | Smartphone, Tablet, Laptop, Television, Desktop Computer, MP3 Player, Projector, Home Theater, Game Console, Karaoke System |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | RCA, Speaker Cable |
| Connectivity technology | Coaxial |
| Control Method | Push Button |
| Controller Type | Button |
| Customer Reviews | 4.6 out of 5 stars 462 Reviews |
| Enclosure Material | Polypropylene |
| Frequency Response | 21000 Hz |
| Frequency response | 21000 Hz |
| Impedance | 4 Ohms |
| Is Waterproof | FALSE |
| Item Dimensions D x W x H | 4.8D x 7.8W x 7.8H centimetres |
| Item Weight | 2.59 kg |
| MP3 player | No |
| Manufacturer | KICKER |
| Maximum Speaker Output Power (in watts) | 200 Watts |
| Model Name | KS Series Coaxial Speakers |
| Model Number | 51KSC6504 |
| Mounting Type | Flush Mount |
| Mounting type | Flush Mount |
| Network Connectivity Technology | Coaxial |
| Number of Audio Channels | 2.0 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Features | Hi Res Audio |
| Speaker Size | 6.5 Inches |
| Speaker Type | Coaxial |
| Speaker maximum output power | 200 Watts |
| Specific Uses For Product | Car audio systems |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Speaker Diameter | 6.5 Inches |
| Tweeter Diameter | 0.75 Inches |
| UPC | 713034058410 |
| Unit Count | 2.0 count |
| Wireless Technology Type | No Wireless Communication Technology |
| Woofer Driver Diameter | 16 Centimetres |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** KICKER
- **Connectivity technology:** Coaxial
- **Frequency response:** 21000 Hz
- **Material:** Polypropylene
- **Model name:** KS Series Coaxial Speakers
- **Mounting type:** Flush Mount
- **Speaker maximum output power:** 200 Watts
- **Speaker type:** Coaxial
- **Special feature:** Hi Res Audio

## Images

![51KSC6504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 6.5" (160mm) Polypropylene Woofer/Midrange, 3/4" (20mm) Silk-Dome Tweeters, 100 Watts RMS, 200 Watts Peak - Image 1](https://m.media-amazon.com/images/I/81lwbwgmAnL.jpg)
![51KSC6504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 6.5" (160mm) Polypropylene Woofer/Midrange, 3/4" (20mm) Silk-Dome Tweeters, 100 Watts RMS, 200 Watts Peak - Image 2](https://m.media-amazon.com/images/I/810OITuFpUL.jpg)
![51KSC6504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 6.5" (160mm) Polypropylene Woofer/Midrange, 3/4" (20mm) Silk-Dome Tweeters, 100 Watts RMS, 200 Watts Peak - Image 3](https://m.media-amazon.com/images/I/91XgNl5RX9L.jpg)
![51KSC6504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 6.5" (160mm) Polypropylene Woofer/Midrange, 3/4" (20mm) Silk-Dome Tweeters, 100 Watts RMS, 200 Watts Peak - Image 4](https://m.media-amazon.com/images/I/81ggglrCQUL.jpg)
![51KSC6504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 6.5" (160mm) Polypropylene Woofer/Midrange, 3/4" (20mm) Silk-Dome Tweeters, 100 Watts RMS, 200 Watts Peak - Image 5](https://m.media-amazon.com/images/I/71nkr6mk5OL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best OEM replacements
*by K***M on 4 February 2025*

Best set of speakers to fit into and replace oem Subaru liberty GT my10 dash mid range speakers.

### ⭐⭐⭐⭐⭐ Great sound quality and Fits in a Jeep JL
*by M***F on 10 June 2026*

51KSC3504 Fits perfectly without modifications in the front upper dashboard position of a Jeep Wrangler JL. Installs in a short time especially if you buy a tweeter plug and play adapter harness. It really fills out the sound as compared to the stock 2.5" speakers. I also got the 4" 51KSC404 to replace the knee panel speakers on the Jeep JL and I wanted to keep the existing speaker pods versus tear apart the complete dash. The three screw adapter ring these come with matches the jeep stock pods, but the speaker base is slightly wider than the OEM hole so I had to grind out about 1/8" of plastic from the factory pods. It only took about 5 minutes per pod so it wasn't horrible, but make sure you have something you can remove some plastic with to make these seat fully into the pod. Sound is great and really fills out the base from the front of the vehicle.

### ⭐⭐⭐⭐⭐ Buen sonido
*by A***Z on 22 December 2025*

Suenan mejor que las bocinas de serie, se las puse a un Nissan Versa 2016 en la parte delantera y quedaron muy bien, tienen bajos muy decentes, tardo un poco en llegar el producto pero todo excelente con el empaquetado, sin problemas.

## Frequently Bought Together

- Kicker 51KSC6504 KS-Series 6.5" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair
- Mabett Rear Speaker Pods Compatible with Ford Bronco 4-Door 2024 2023 2022 2021, Upgrade 6.5" Pods for Bronco Accessories, Interior Accessories Black

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-06-23*