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Kicker 51KSS6904 - 6x9" 2 Way KS-Series Component Speaker System KSS6904

Kicker KSS6904 (51KSS6904) - 600W Peak (300W RMS) 6 x 9" KS Series 2-Way Component Car Speakers

New 2024 Model 

In stock
Special Price £249.99 Regular Price £279.99 Save £30.00


Musical detail

Kicker designed their KS Series lineup to be a substantial step-up from your factory speakers. The KSS690 6"x9" component system features two woofers for satisfying bass and a pair of silk dome tweeters that deliver smooth vocal and instrumental details. This system's outboard crossovers direct frequencies where they need to go and let you tweak the tweeter levels depending on your taste. What does that all mean for you? You'll finally hear what most factory speakers don't provide — a full spectrum of natural sound.

Why choose components?

In a component system, the tweeter is separated from the woofer so that it can be mounted higher up in the car for a more direct path to your ears. The crossover network in a component system uses high-quality components to ensure a sharp delineation between the frequencies sent to the woofer and tweeter. While installing components can mean a little more installation time, your music will sound more realistic, more "live," and have greater depth and imaging. If a component system doesn't suit your application, these speakers can be converted into 2-way speakers by mounting the tweeter directly into the woofer.

Kicker KS Series KSS690 6"x9" 2-way component speaker system

The polypropylene woofer and rubber surround are designed to last.

Great performance with high or low power

While we'd recommend using an aftermarket amp to power this system, the KS Series features a highly sensitive design that conjures hefty volume even from low-powered factory radios. 

Fit matters

These low-profile woofers and smartly designed 1" tweeters feature a reduced mounting depth, making them a match for more vehicles than ever. Kicker includes tweeter mounting brackets for a variety of mounting options.

Product Features:

  • 6" x 9" 2-way Component System Car Speakers
  • Power Handling:
    • Peak: 600 watts per set / 300 watts each side
    • RMS: 300 watts per set / 150 watts each side
  • Polypropylene cone material
  • Rubber speaker surround
  • 1" Silk Dome Tweeters
  • Top-mount Depth: 2-15/16"
  • Cutout Dimensions: 5-5/8 x 8-7/16 
  • Impedance: 4 ohms
  • Frequency Response: 30 - 21000 Hz
  • Sensitivity: 92 dB
  • High power handling
  • Thin-mount design easily fits behind factory grilles
  • Four tweeter mounting options
  • Articulating tweeter pod included
  • Smaller crossover makes mounting even easier
  • Grilles included

What's in the Box:

  • Two KSS690 Woofers
  • Two phase plugs (installed)
  • Two 1" Tweeters (each with 6" Wire attached)
  • 2 Woofer mounting brackets
  • 2 Woofer bottom mount spacers
  • Two woofer grilles
  • Two grille mounting rings
  • Two crossovers
  • Two upper tweeter mounting posts
  • Two lower tweeter mounting posts
  • Two tweeter housings
  • Two tweeter housing washers
  • Two flush mount rings (tweeter)
  • Two front angle rings (tweeter)
  • Two back angle rings (tweeter)
  • Two short mounting nuts (tweeter)
  • Two long mounting nuts (tweeter)
  • Two surface mount pods
  • Two pod nuts
  • Tweeter tool
  • Two 10" Zip ties
  • 2 Adhesive backed foam pads
  • Grille putty
  • Four red plastic wire caps
  • Two M4x7mm Machine screws
  • Twelve 1-1/8" Screws
  • Quick-Start guide (English/ Spanish/ German/ French)
  • Woofer template
  • Authorized Internet Dealer
  • Manufacturer's Warranty
  • Priced Per Complete Component System: 2 midwoofers, 2 tweeters and 2 crossover networks.

Priced Per Complete Component System: 2 midwoofers, 2 tweeters and 2 crossover networks.

Product history:

Kicker 51KSS6904 thumbnail
Kicker 51KSS6904
(newest, current model)
Kicker KSS690 thumbnail
Kicker KSS6904 (47KSS6904)
(previous model, replaced by Kicker 51KSS6904)

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More Information
Price £279.99
Manufacturer Kicker
Vehicle Manufacturer None
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