---
product_id: 612203378
title: "Kicker 51KSC504 KS-Series 5.25\" Coaxial Speakers with .75\" tweeters, 4-Ohm, Pair"
brand: "kicker"
price: "€ 412.32"
currency: EUR
in_stock: true
reviews_count: 5
category: "Kicker"
url: https://www.desertcart.fi/products/612203378-kicker-51ksc504-ks-series-5-25-coaxial-speakers-with-75
store_origin: FI
region: Finland
---

# 90dB sensitivity for crisp sound 75W RMS power handling 1.75in mounting depth fits most vehicles Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair

**Brand:** kicker
**Price:** € 412.32
**Availability:** ✅ In Stock

## Summary

> 🎶 Upgrade your ride’s soundstage—because your commute deserves a concert experience!

## Quick Answers

- **What is this?** Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair by kicker
- **How much does it cost?** € 412.32 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/612203378-kicker-51ksc504-ks-series-5-25-coaxial-speakers-with-75)

## 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

- • **Slim Fit, No Mod Needed:** Less than 2-inch depth and minimal tweeter protrusion ensure seamless factory fit.
- • **Optimized for 15-75W Amplifiers:** Perfect power range for balanced performance and longevity.
- • **Precision Polypropylene Woofers:** Internally dampened cones and rubber surrounds deliver punchy midrange and bass.
- • **Silk-Dome Tweeters for Smooth Highs:** Neodymium magnet tweeters produce natural, detailed treble without harshness.
- • **Concert-Level Volume, Zero Distortion:** Play loud with crystal-clear highs and deep bass that impress even audiophiles.

## Overview

The Kicker 51KSC504 KS-Series 5.25" coaxial speakers combine high power handling (75W RMS) with a compact design (under 2" mounting depth) to deliver rich midrange and smooth highs via polypropylene woofers and silk-dome tweeters. Engineered for easy installation in most vehicles, these 4-ohm speakers elevate your car audio with precise sound clarity and robust bass, making them a top choice for drivers seeking premium in-car audio without modifications.

## Description

Kicker 51KSC504 KS Series 5.25" Coaxial Speakers With .5" Tweeters, 4ohm KICKER’s elite KS-Series Coaxial Speakers upgrade your audio to new levels of accuracy with extended frequency response and the smoothest highs. Potent Performance - KICKER KS-Series Speakers let you play at concert-like volume, yet maintain the smoothness and subtlety to please even the most selective ear. Internally dampened polypropylene cones and durable rubber surrounds assist the woofers in creating precise midrange and midbass, while high-quality silk-dome tweeters deliver natural, detailed highs. With less than a 2-inch mounting depth and one millimeter of tweeter protrusion, the KSC50 is a perfect fit in almost every vehicle on the road today. They work best with 15 to 75 watts of recommended power. See below for more details. High power handling Silk-dome tweeters for a smooth sound Polypropylene woofer and tough rubber surrounds Thin-mount design easily fits behind factory grilles Specifications - Speaker Design: 2-Way Woofer [in, mm]: 5-1/4, 130 Tweeter [in, mm]: ¾, 20 Rated Impedance [Ω]: 4 Recommended Amplifier Power [Watts RMS]: 75 Sensitivity [1W, 1m]: 90 Frequency Response [Hz]: 45-21k Mounting Hole Diameter [in, mm]: 4-1/2, 115 Top Mount Depth [in, mm]: 1-3/4, 45 Bottom Mount Depth [in,mm]: 2, 52 Tweeter Protrusion [in,mm]: 1/4, 6 Grilles: Yes Tweeter Magnet Material: Neodymium Tweeter Dome Material: Silk Woofer Cone Material: Polypropylene Woofer Surround Material: Rubber

Review: Best set of speakers to fit into and replace oem Subaru liberty GT my10 dash mid range speakers.
Review: Good set of speakers, definitely raise some hell especially when you see how tiny they’re when you open the box. I have these a the kicker 6 3/4 in both of my trucks, even did the same set in my cousins truck. Using these series of speakers in 3 trucks tells you they’re good value for the money, an everyone comments how good my trucks sound when they hear it.

## Features

- 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!
- Completely redesigned with new cones, voice coils and crossovers, KS-Series Coaxial Speakers are a serious upgrade from your factory sound.
- Featuring zero (or minimal) tweeter protrusion, you get a perfect fit in almost every vehicle on the road today, without modifications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRLHJK2J |
| Best Sellers Rank | #48,917 in Electronics ( See Top 100 in Electronics ) #157 in Coaxial Car Speakers |
| Item model number | 51KSC504 |
| Manufacturer | Kicker |
| Product Dimensions | 4.78 x 7.8 x 7.8 cm; 1.7 kg |

## Product Details

- **Brand:** KICKER
- **Speaker maximum output power:** 150 Watts
- **Frequency response:** 21 KHz
- **Connectivity technology:** Wired
- **Audio output mode:** Stereo

## Images

![Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair - Image 1](https://m.media-amazon.com/images/I/81CGyfHHgRL.jpg)
![Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair - Image 2](https://m.media-amazon.com/images/I/81pQ26yg4ZL.jpg)
![Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair - Image 3](https://m.media-amazon.com/images/I/81fgizgfeuL.jpg)
![Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair - Image 4](https://m.media-amazon.com/images/I/81rJLoHUjvL.jpg)
![Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair - Image 5](https://m.media-amazon.com/images/I/71s-DByzrJL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*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.

### ⭐⭐⭐⭐⭐ Review
*by J***A on 2 January 2026*

Good set of speakers, definitely raise some hell especially when you see how tiny they’re when you open the box. I have these a the kicker 6 3/4 in both of my trucks, even did the same set in my cousins truck. Using these series of speakers in 3 trucks tells you they’re good value for the money, an everyone comments how good my trucks sound when they hear it.

### ⭐⭐⭐⭐⭐ Review
*by A***É on 28 November 2025*

bon haut parleur et de bonne qualité. le son est agréable. le tout était super bien emballé. bien content de mon achat

## Frequently Bought Together

- Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair
- Kicker 2) New 43DSC69304 D-Series 6x9" 360 Watt 3-Way Car Audio Coaxial Speakers
- Kicker 46CSC354 CS-Series CSC35 3.5-Inch (89mm) Coaxial Speakers, 4-Ohm (Pair) - Used Very Good

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**Shop now:** [https://www.desertcart.fi/products/612203378-kicker-51ksc504-ks-series-5-25-coaxial-speakers-with-75](https://www.desertcart.fi/products/612203378-kicker-51ksc504-ks-series-5-25-coaxial-speakers-with-75)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-08*