Kicker designed their KS Series speakers to be a substantial step up from run-of-the-mill factory speakers. The KSC40 4″ speakers feature a polypropylene woofer that provides a satisfying, natural sound, paired with a 1/2″ silk dome tweeter that prioritizes smoothness in your music’s vocal and instrumental details. With these speakers, you can rediscover how your favorite songs were meant to be heard.
The KS Series features a highly sensitive design that delivers impressive volume even from low-powered factory radios, making them a perfect upgrade even if you’re not planning to swap out your factory radio or add an amplifier. The silk dome tweeters offer smooth highs for any type of music without harshness.
These low-profile speakers feature a reduced mounting depth and minimal tweeter protrusion, making them compatible with almost any car. They include 3-hole mounting brackets for installation versatility, and the speaker’s mounting tabs can be removed to accommodate both 4-hole and 2-hole mounting applications.
Product Highlights
- 2-way car speakers (pair)
- 4″ polypropylene woofer cone with rubber surround
- 1/2″ silk dome tweeter for smooth high-frequency detail
- Highly sensitive design works well with factory radios
- Low-profile design with minimal tweeter protrusion
- Adaptable mounting options for various vehicle applications
- Designed to fit behind factory grilles or panels
Package Contents
- Two 2-way speakers
- 2 adapter brackets
- Two 11″ lengths of speaker wire (tinned wire on one end and female quick slides on the other)
- 4 red plastic wire caps
- Eight 1-1/8″ screws
- Quick-start guide (English/Spanish/German/French)




