




KICKER 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
Upgrade your audio with the KICKER 51KSC6504 Coaxial Speaker System, a 6.5″ 2-way design delivering high-fidelity, concert-level sound with 100 Watts RMS (200 Watts Peak) power handling. Featuring ultra-responsive Polypropylene Woofer/Midrange cones and 3/4″ Silk-Dome Tweeters, these speakers provide stunning clarity, robust bass, and effortless installation thanks to their thin-mount profile.
- High Power Handling: 100 Watts RMS / 200 Watts Peak for exceptional volume.
- Premium 2-Way Coaxial Speakers featuring 6.5″ Woofer/Midrange and 3/4″ Silk-Dome Tweeters.
- Hi-Res Audio and integrated crossover for precise, high-fidelity sound reproduction.
- Ultra-thin mounting depth ensures easy installation in a wide range of vehicles.
£76.35 – £174.94Price range: £76.35 through £174.94

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Description
KICKER 51KSC6504 KS Series: Unleash Concert-Level Audio with High-Power 6.5″ 2-Way Coaxial Speakers (200W Peak)
Upgrade your vehicle’s audio instantly with the KICKER 51KSC6504 Coaxial Speaker System. Designed for audiophiles and enthusiasts seeking high-fidelity sound, this 2-way system delivers stunning clarity and robust bass, transforming every drive into a premium listening experience. Featuring ultra-responsive 6.5″ (160mm) Polypropylene Woofer/Midrange cones and smooth 3/4″ (20mm) Silk-Dome Tweeters, these speakers reproduce sound with concert-level precision. The high-efficiency design requires only 15 Watts but handles up to 100 Watts RMS (200 Watts Peak), making them perfect for powering directly from a head unit or an external amplifier. Thanks to the integrated crossover and thin-mount design, installation is effortless in a wide range of domestic and import vehicles, allowing you to bypass factory limitations without sacrificing sound quality.
Key Features
- Premium 2-Way Coaxial Design for seamless high and low-frequency blend.
- Powerful 6.5″ (160mm) Polypropylene Woofer/Midrange for deep, resonant bass and durable performance.
- 3/4″ (20mm) Silk-Dome Tweeters provide smooth, articulate high frequencies (Neodymium magnets for a smooth sound).
- High Power Handling: 100 Watts RMS / 200 Watts Peak for exceptional volume and clarity.
- Ultra-Thin Mounting Profile: Integrated crossover and thin-mount depth of just 1-13/16″ (46mm) ensures easy fitment behind most factory grilles.
- Wide Vehicle Compatibility: Fits select GM, Ford, Chrysler, Jeep, Dodge, and various import models.
Important Information
- Includes one (1) pair of KICKER 51KSC6504 speakers, grilles, and mounting hardware.
- Nominal Impedance: 4-Ohms.
- Recommended Amplifier Power: 15 – 100 Watts RMS.
- Frequency Response Range: 43 Hz – 21 kHz.
- Hi-Res Audio feature for superior sound quality.
- Flush Mount installation type.
Why Choose Think Assemble
- Quality Assurance: Every KICKER product is inspected to meet the highest performance standards before shipping.
- Fast Shipping: We ensure quick and secure delivery so you can start enjoying your new audio system sooner.
- Expert Support: Our team provides dedicated assistance for installation questions and product knowledge.
Specification
Overview
| Weight | 2590 g |
|---|---|
| Dimensions | 4.78 × 7.8 × 7.8 cm |
| Is discontinued by manufacturer |
No |
| Product Dimensions |
4.78 x 7.8 x 7.8 cm; 2.59 kg |
| Date First Available |
13 May 2024 |
| Item model number |
51KSC6504 |
| Guaranteed software updates until |
unknown |
| Manufacturer |
KICKER |
| Model |
51KSC2704 ,51KSC3504 ,51KSC4604 ,51KSC504 ,51KSC6504 |
Customer Reviews
5 reviews for KICKER 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
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Klam –
Best OEM replacements
Best set of speakers to fit into and replace oem Subaru liberty GT my10 dash mid range speakers.
Justin Cerda –
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.
Rémi Beauchamp –
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!
まぐろ –
純正からの交換で音質アップ
2018年式マツダCX-5 BOSE仕様車のセンタースピーカー交換にこちらを使用しました。音の輪郭がハッキリ違います。そのおかげで前方定位感も良くなりました。外国産スピーカーは初めてでしたがなかなか繊細な音が出て大変満足でした。
Arturo Tamez –
Buen sonido
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.