Kicker 51KSC6804 KS-Series 6x8 Coaxial Speakers with .75" tweeters, 4-Ohm, Pair
Condition: New
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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Wednesday, Aug 6
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Model: 51KSC6804
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.
Product Dimensions: 1.88 x 3.07 x 3.07 inches
Item Weight: 4.4 pounds
Item model number: 51KSC6804
Is Discontinued By Manufacturer: No
Date First Available: January 5, 2024
Manufacturer: Kicker
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Aug 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Model: 51KSC3504
Replaced the speakers in a 25 Jeep wrangler, these fit perfectly for the front speakers. Easily pull out the factory speakers and replace with these. The sound is so much better with these!! It’s loud and clear now, price is good as well!
Reviewed in the United States on June 19, 2025 by Chelse4c
Model: 51KSC2704
Installed to replace factory speaker with new head unit. With factory radio didn’t sound good because it puts out 2ohm vs 4 which is recommended for these speakers. Once I changed the factory radio. Boom! Sounds awesome.
Reviewed in the United States on June 7, 2025 by OOOV
Model: 51KSC6504
I replaced the OEM speakers in my 05 Miata with these and they pretty much dropped right in. I did have to replace the head unit with something that had a bit more power to it, but all in all it is wonderful. These things are LOUD. With the top down and at 50% volume you can hear my music from down the road. Really great build quality. Has tons of power. They look killer once installed. All in all, wonderful speakers for the money.
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Reviewed in the United States on May 4, 2025 by Eli Eli
Model: 51KSC2704
Perfect fit for Gen 6 Camaro front dash corner speakers. Even came with metal mounting bracket that was exact fit and comes with bass blocking caps. Sounds great.
Reviewed in the United States on June 1, 2025 by PirateJeff
Model: 51KSC69304
The KICKER 51KSC69304 6x9” Coaxial Speakers are a massive upgrade! The clarity is outstanding, with crisp highs, detailed mids, and a surprisingly deep, punchy bass response for a coaxial setup. They handle power well and stay distortion-free even at higher volumes. Installation was straightforward, and they fit perfectly in my setup. If you’re looking for a high-quality 6x9” speaker that delivers balanced and powerful sound, these are a fantastic choice!
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Reviewed in the United States on February 18, 2025 by rdem78
Model: 51KSC69304
I purchased these 6x9 KS Series Kickers for my 2018 Silverado and the included mounting hardware fits perfectly. The speakers sound great. Solid low frequency bass without distortion. The highs are very clear without sounding tinny or shrill. Overall, very happy with them. Also purchased the matching 2.75" mid ranges for the dash. Again, mounting hardware for perfectly. I have an aftermarket stereo that has an EQ with I aware about 30 bands. With the stock dash speakers, the top 10 bands did nothing, literally no difference. After installing these kickers, every single band now has a perceivable impact. So these speakers are clearly much better quality over factory (obviously), but I was really impressed that they handled all of the higher frequency bands so well. Really pleased with them.
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Reviewed in the United States on April 14, 2025 by JM JM
Model: 51KSC41004
Nice & clear but would like a little more bass. I'm sure it's the head unit & not the speakers. Has all you need for installation.
Reviewed in the United States on April 26, 2025 by Paul New
Model: 51KSC4604
Put these in my 4430 John Deere and they sound great!
Reviewed in the United States on June 11, 2025 by John Walstrom