---
product_id: 726520606
title: "51KSC3504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 3.5\" (89mm) Polypropylene Woofer/Midrange, 1/2\" (13mm) Silk-Dome Tweeters, 50 Watts RMS, 100 Watts Peak"
brand: "kicker"
price: "¥51379"
currency: JPY
in_stock: true
reviews_count: 5
category: "Kicker"
url: https://www.desertcart.jp/products/726520606-51ksc3504-coaxial-speaker-system-2-way-design-one-1-pair
store_origin: JP
region: Japan
---

# 80-20k Hz frequency range 100W peak power 3.5" slim fit design 51KSC3504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 3.5" (89mm) Polypropylene Woofer/Midrange, 1/2" (13mm) Silk-Dome Tweeters, 50 Watts RMS, 100 Watts Peak

**Brand:** kicker
**Price:** ¥51379
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your drive with sound that commands attention!

## Quick Answers

- **What is this?** 51KSC3504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 3.5" (89mm) Polypropylene Woofer/Midrange, 1/2" (13mm) Silk-Dome Tweeters, 50 Watts RMS, 100 Watts Peak by kicker
- **How much does it cost?** ¥51379 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/726520606-51ksc3504-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

- • **Concert-Level Volume:** Unleash powerful 100W peak sound without distortion
- • **Precision Audio Clarity:** Silk-dome tweeters deliver smooth, detailed highs for audiophile-grade listening
- • **Optimized Power Handling:** Designed for 15-50W RMS amps to maximize performance and longevity
- • **Seamless Vehicle Integration:** Ultra-thin 3/16" tweeter protrusion fits perfectly behind factory grilles—no mods needed
- • **Durable Build for Bass Impact:** Polypropylene cones with rubber surrounds ensure punchy midrange and deep bass

## Overview

The Kicker 51KSC3504 KS-Series 3.5" Coaxial Speakers combine concert-level power handling (up to 100W peak) with audiophile-grade clarity via silk-dome tweeters and polypropylene woofers. Their ultra-slim design fits almost any vehicle without modification, delivering punchy bass and smooth highs for a premium in-car audio upgrade.

## 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: Really Surprising for the Price Point - Beautiful upgrade over my very old and crusty OEM speakers in my 2004 Honda Element EX. The sound is rich, warm, and well-balanced, just the way I like it, perfect for classical music, jazz, and crooners, which I listen to most. They also handle electronic music surprisingly well, and the bass is solid! I spent weeks searching for the right speakers, and these definitely do a fantastic job. At this price point, it’s hard to find better! Highly recommend!

## Features

- The 51KSC3504 2-Way Coaxial Speaker System mounts effortlessly in select domestic and import models, thanks to an ultra-thin speaker design and internal crossover. The coaxial system combines easy installation and acoustic perfection to achieve Concert-Level realism and volume.
- Rugged 3.5" (89mm) Polypropolene Woofer/Midrange with tough Rubber Surround fits select GM, Ford, Chrysler, Jeep, Dodge and Imports.
- 1/2" (13mm) Neodymium Silk-Dome tweeters coaxially mounted for a smooth sound. Tweeter protrusion of 3/16" (4mm) above the speaker frame.
- Thin-mount design easily fits behind factory grilles; 1-5/8" (41.5mm) mounting depth. Grilles not included.
- Recommended Amplifier Power: 15 - 50 Watts RMS | Peak Power Handling: 100 Watts | Sensitivity: 88dB 1W/1M | Frequency Response: 80 Hz - 20 kHz | Nominal Impedance: 4-Ohms

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRLFV2G2 |
| Antenna Location | Automotive |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Box Contents | Two (2) speakers, Mounting Hardware, Instructions Manual |
| Brand | KICKER |
| Brand Name | KICKER |
| Colour | black |
| Connectivity Protocol | Coaxial |
| Connectivity Technology | Wired |
| Country of Origin | USA |
| Customer Reviews | 4.6 out of 5 stars 546 Reviews |
| Frequency Response | 20000 Hz |
| Item Weight Unit of Measure | 1.8 Pounds |
| MP3 player | No |
| Manufacturer | KICKER |
| Model Name | KS Series Coaxial Speakers |
| Model Number | 51KSC3504 |
| Mounting Type | Flush Mount |
| Network Connectivity Technology | Wired |
| Number of Audio Channels | 2.0 |
| Number of Items | 2 |
| Product Features | Hi Res Audio |
| Speaker Maximum Output Power | 100 Watts |
| Speaker Size | 3.5 Inches |
| Speaker Type | Coaxial |
| Specific Uses For Product | Automotive |
| UPC | 713034058397 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology Type | No Wireless Communication Technology |
| Woofer Driver Diameter | 8.89 Centimetres |

## Product Details

- **Brand:** KICKER
- **Connectivity Technology:** Wired
- **Material:** Polypropylene, Rubber, Silk, Neodymium
- **Mounting Type:** Flush Mount
- **Speaker Maximum Output Power:** 100 Watts

## Images

![51KSC3504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 3.5" (89mm) Polypropylene Woofer/Midrange, 1/2" (13mm) Silk-Dome Tweeters, 50 Watts RMS, 100 Watts Peak - Image 1](https://m.media-amazon.com/images/I/81u-yNgHO7L.jpg)
![51KSC3504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 3.5" (89mm) Polypropylene Woofer/Midrange, 1/2" (13mm) Silk-Dome Tweeters, 50 Watts RMS, 100 Watts Peak - Image 2](https://m.media-amazon.com/images/I/81ydKlv1eGL.jpg)
![51KSC3504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 3.5" (89mm) Polypropylene Woofer/Midrange, 1/2" (13mm) Silk-Dome Tweeters, 50 Watts RMS, 100 Watts Peak - Image 3](https://m.media-amazon.com/images/I/81o1DcAec3L.jpg)
![51KSC3504 Coaxial Speaker System, 2-Way Design, One (1) Pair, 3.5" (89mm) Polypropylene Woofer/Midrange, 1/2" (13mm) Silk-Dome Tweeters, 50 Watts RMS, 100 Watts Peak - Image 4](https://m.media-amazon.com/images/I/81hPHN4+oxL.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.

### ⭐⭐⭐⭐⭐ Really Surprising for the Price Point
*by R***P on 2 November 2025*

Beautiful upgrade over my very old and crusty OEM speakers in my 2004 Honda Element EX. The sound is rich, warm, and well-balanced, just the way I like it, perfect for classical music, jazz, and crooners, which I listen to most. They also handle electronic music surprisingly well, and the bass is solid! I spent weeks searching for the right speakers, and these definitely do a fantastic job. At this price point, it’s hard to find better! Highly recommend!

### ⭐⭐⭐⭐⭐ Fit perfect in my 1998 GMC Yukon
*by O***0 on 25 April 2026*

Took me awhile to find out who sold this size speaker. Kinda an odd size nowadays, but I wanted the best quality. And these are one of the best speaker brands in today’s market. You won’t be disappointed at all. Very easy to install, professional quality and excellent sound. Definitely worth the money.

## Frequently Bought Together

- Kicker 51KSC3504 KS-Series 3.5" Coaxial Speakers with .5" tweeters, 4-Ohm, Pair
- RED WOLF Car Front Dash Tweeter Speaker Wiring Harness for 2008-2022 Toyota RAV4 Camry 4Runner Highlander Scion, 2010-2019 Subaru Forester Factory Speaker Replacement Adapter Connector Non JBL System

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**Shop now:** [https://www.desertcart.jp/products/726520606-51ksc3504-coaxial-speaker-system-2-way-design-one-1-pair](https://www.desertcart.jp/products/726520606-51ksc3504-coaxial-speaker-system-2-way-design-one-1-pair)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-05-18*