---
product_id: 612203378
title: "Kicker 51KSC504 KS-Series 5.25\" Coaxial Speakers with .75\" tweeters, 4-Ohm, Pair"
brand: "kicker"
price: "1811 Lei"
currency: RON
in_stock: false
reviews_count: 5
category: "Kicker"
url: https://www.desertcart.ro/products/612203378-kicker-51ksc504-ks-series-5-25-coaxial-speakers-with-75
store_origin: RO
region: Romania
---

# 75W RMS power handling for concert-level volume 45-21kHz frequency range for rich audio 90dB sensitivity for crisp sound Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair

**Brand:** kicker
**Price:** 1811 Lei
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Upgrade your ride’s soundtrack—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?** 1811 Lei with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/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

- • **Optimized Power Range:** Ideal for 15-75W RMS amps, balancing power efficiency with dynamic sound performance.
- • **Precision Polypropylene Woofers:** Internally dampened cones with rubber surrounds deliver punchy midbass and crystal-clear mids.
- • **Ultra-Slim Design, Effortless Fit:** Less than 2-inch mounting depth with minimal tweeter protrusion fits almost any vehicle—no mods needed.
- • **Silk-Dome Tweeters for Smooth Highs:** Neodymium magnet tweeters produce natural, detailed highs that elevate every track.
- • **Concert-Level Volume, Studio-Grade Clarity:** Play loud without losing subtlety—perfect for audiophiles who demand detail.

## Overview

The Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers combine high-sensitivity silk-dome tweeters and polypropylene woofers with durable rubber surrounds to deliver a wide 45-21kHz frequency response and powerful 75W RMS handling. Their slim design fits most vehicles without modification, making them a top-tier upgrade for drivers seeking crisp, concert-quality sound on the road.

## 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 OEM replacements - Best set of speakers to fit into and replace oem Subaru liberty GT my10 dash mid range speakers.
Review: I have 3 trucks with all kicker speakers good product - 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 | #49,929 in Electronics ( See Top 100 in Electronics ) #147 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/41BfR9SCtDL.jpg)
![Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair - Image 2](https://m.media-amazon.com/images/I/712G4PN10rL.jpg)
![Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair - Image 3](https://m.media-amazon.com/images/I/71s-DByzrJL.jpg)
![Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair - Image 4](https://m.media-amazon.com/images/I/81CGyfHHgRL.jpg)
![Kicker 51KSC504 KS-Series 5.25" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair - Image 5](https://m.media-amazon.com/images/I/81fgizgfeuL.jpg)

## 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.

### ⭐⭐⭐⭐⭐ I have 3 trucks with all kicker speakers good product
*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.

### ⭐⭐⭐⭐⭐ bon haut parleur avec les grilles
*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.ro/products/612203378-kicker-51ksc504-ks-series-5-25-coaxial-speakers-with-75](https://www.desertcart.ro/products/612203378-kicker-51ksc504-ks-series-5-25-coaxial-speakers-with-75)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-23*