Kicker's been making great car speakers for decades, so it's no big surprise that their DS Series speakers provide maximum performance at a minimum cost. The DS40 4" 2-way speakers feature rigid, lightweight polypropylene woofers that dish out rich sound efficiently. Ribbed polyfoam surrounds stabilize the woofers and resist cracking or separating, so you'll enjoy lasting reliability.

Balanced-dome tweeters bring out all the details in your music with precision and clarity. You'll hear dynamic performance that factory speakers just can't match. Kicker includes grilles with the DS40 speakers for custom installations, and removable tabs allow these speakers to fit in many older Japanese and European cars.

Product Highlights:

  • 4" 2-way car speakers (pair)
  • polypropylene woofer with ribbed polyfoam surround
  • 1/2" PEI balanced-dome tweeter
  • Neodymium tweeter magnet
  • removable tabs allow speakers to fit in 2-hole openings and other special applications
  • grilles included
  • power range: 6-25 watts RMS (50 watts peak power)
  • frequency response: 60-20,000 Hz
  • sensitivity: 88 dB
  • top-mount depth: 1-7/8"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research

What's in the box?

Download owner's manual

  • Two 4" coaxial speakers
  • 2 Black plastic grilles
  • Two 12" lengths of speaker wire (tinned wire on one end and 0.205" + 0.11" female quick slides on the other end)
  • 4 Red plastic butt connectors
  • 8 Self-tapping screws (length=1")
  • 8 Speed clips
  • Owner's Manual (Eng / Span / Fren / Ger)

Features and Specs

Design 2-way
Tweeter Design 1/2" Balanced dome
Tweeter Composition PEI (Polyetherimide)
Woofer Composition Polypropylene
Woofer Surround Polyester foam
Parts Warranty 1 Year
Labor Warranty 1 Year
Sensitivity 88 dB at 1 watt
Frequency Response 60 - 20k Hz
RMS Power Range (Watts) 6-25
Peak Power Handling (Watts) 50
Impedance (Ohms) 4
Top-mount Depth (Inches) 1 7/8
Bottom-mount Depth (Inches) 1 15/16
Cutout Diameter or Length (inches) 3 3/4

Product Research


Polypropylene Woofer Cones: The Kicker DS-series speakers feature durable polypropylene woofer cones for power and control. Polypropylene woofers are also resistant to moisture and high temperature extremes found in automotive applications.

Ribbed Polyester Foam Surrounds: The ribbed polyester foam surrounds allow extended cone excursion for additional bass output and higher SPL.

1/2" PEI Balanced-dome Tweeters: The 1/2" PEI balanced-dome tweeters provide a smooth high frequency response with quick, detailed and spatially-correct imaging. PEI is an acronym for polyether imide. The tweeters have strong neodymium magnets for higher power handling.

Grilles: The DS40s come with black plastic grilles.

Mounting Options: The four mounting tabs are scored so they can easily be removed for 2-hole or special application mounting.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Kicker DS40 Reviews

Average Customer Review:

11 reviews
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Surprisingly Full

Written By claskowski, North Carolina on Sunday, September 09, 2012

Crutchfield Customer Review (What's this?)

Great sounding little speakers. Nice and full. They don't have the bass you would get from a large woofer but these are not large speakers. The bass does come through when the sound is cranked a bit - not loud enough to blow your eardrums but the necessary volume to cover the road noise found in a pickup. These are definitely under-rated speakers. One word - if getting these for a pickup that requires the 4x6 adapters, you will definitely need screws to mount the speaker to the plate and the plate to the rear of the truck.

Pros: Great sound, tight bass at higher volumes, fabulous bang-for-the-buck.

Cons: None to speak of.

Respectable, good value

Written By DenCon, Central Washington on Sunday, August 05, 2012

Crutchfield Customer Review (What's this?)

For the classic Saab 900, there are few decent economy speakers that work without having to perform some modifications. The DS40s fill the bill in good form. Sonically, a bit flat, these speakers are very efficient (loud) without having to push the head unit hard. I would not hesitate to get another pair if the need arises.

Pros: Excellent value, efficient

Cons: Somewhat-flat sonics, but definitely tolerable

Kicker DS40

Written By Anonymous, Denali Park Alaska on Thursday, July 19, 2012

Crutchfield Customer Review (What's this?)

Nice sound, very easy to install, perfect fit

Kicker DS 40 4 inch spk.

Written By Chuck W., Wisconsin on Monday, June 18, 2012

Crutchfield Customer Review (What's this?)

I was able to get from Crutchfield for a great price. I just tested them on Sunday 6-17. They really have a better sound in all frequency ranges than the 4x6 manufacturerer spk that they replaced. If you have a oval spk. in your car it is prudent to spend an extra 10 dollars to get the spk. adaptors. and use a round cone spk. I've been involved with Car Stereo Installation and Automotive work for over 30 years. No spk. out there is a better value than the underrated Kicker Spks. I've heard them all in alot of different vehicles.

Pros: Great Value! Better Sound in all frequency ranges. Higher Sensitivity than comprable 4 inch. spks.

Cons: none

Very nice !!!

Written By Joetrouble, Savannah , Ga on Tuesday, April 03, 2012

Crutchfield Customer Review (What's this?)

Very nice addition to my system I installed them in the rear headliner of my Nissan crewcab ! The clarity is unbeatable !

Kicker DS-40

Written By Rich, Santa Rosa on Saturday, March 24, 2012

Crutchfield Customer Review (What's this?)

Sounds Great. Survice was great

Pros: They fit perfectly

Kicker DS40

Written By Jason D, Kentucky on Friday, January 27, 2012

Crutchfield Customer Review (What's this?)

Used as OEM speaker replacements in 1991 Toyota Corolla.

Pros: Great replacement for OEM 4" dash mounted speakers. Allowed me to hone hacksawing skills by requiring 16 cuts through metal to help them fit (ok, some sarcasm here...see cons).

Cons: Disappointed these didn't fit vehicle without major modification (i.e. hacksawing lots of metal, shaving off back of grille so the tweeter wouldn't interfere). Crutchfield only warned me of limited mounting height in the rear deck (there was LOTS of clearance), but nothing about the front, where mounting height was of much greater importance.

Kicker DS40

Written By Kollman, Kensal ND on Monday, October 17, 2011

A very good OEM replacement. Has good sound quality for a small speaker. Would recommend for a stock replacement.

Kicker DS40

Written By J-Money, Monroe, MI on Sunday, October 02, 2011

Crutchfield Customer Review (What's this?)

Not a bad price. Absolutely no bass, so must have subs with these. My front speaker blew not even a week after installing. I would prefer better speakers then these.

Great little speaker!

Written By Matthew, Greenville, SC on Friday, July 22, 2011

Crutchfield Customer Review (What's this?)

I installed these in the dash of a 2000 Toyota Echo for a friend, along with the Kicker DS60 6-1/2" in the door, and some RF 6x9's in the rear deck, powered by a Kenwood cd player, and let me tell you, this system ROCKS! The dash speakers were by far the easiest to replace in the entire install, and compared to the little tweeters that were there from the factory, these 4 inchers are a HUGE improvement. They did distort a tiny bit when I crunk up the bass at first, (tested the system with some Dubstep, lol) but once I got the levels sorted, they came into their own quite nicely. I would definitely buy again.

Decent aftermarket

Written By lastner, Fayetteville, NC on Thursday, March 24, 2011

Crutchfield Customer Review (What's this?)

Great on highs, a little tinny, and if your system is only running on 4", it can sound a little empty. Good beginning for an upgrade project.

Get everything you’ll need to enjoy your new Kicker DS40

Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car.
You may need speaker wire to connect your speakers to your amp or receiver.
Keep your speakers clean and dry. They compress to fit behind your speakers.
These speaker connectors are handy if you're running new speaker wire or if your speakers have oversized terminals.
The right tools will help keep your installation simple and clean.
If your stereo doesn't cut the deep bass from your full-range speakers, a set of bass blockers can help prevent distortion and give you cleaner bass too.
Dynamat 10415 Xtreme Speaker Kit

Dynamat 10415 Xtreme Speaker Kit

Two 10-in. x 10-in. Sheets

Item #: 15410415


Add to Cart
Dynamat 10435 Xtreme Door Kit

Dynamat 10435 Xtreme Door Kit

With four 12" x 36" sheets — covers two doors

Item #: 15410435


Add to Cart
Dynamat SuperLite Tri-Pak

Dynamat SuperLite Tri-Pak

Triple package — 3 sheets, 12 square feet (Model #10612)

Item #: 15410612


Add to Cart
T-Spec 16-gauge Speaker Wire

T-Spec 16-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW16WB1


T-Spec 12-gauge Speaker Wire

T-Spec 12-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW12WB1


Stinger PRO Series Speaker Wire

Stinger PRO Series Speaker Wire

Priced per foot (16 Gauge)

Item #: 541SPW516B


Boom Mat 4

Boom Mat 4" Speaker Baffles

Protect your speakers
Regular and slim-line sizes (Slim-line: 2-1/4" depth)

Item #: 696B050311


Add to Cart

XTC 4" Speaker Baffles

Protect your speakers (Slim-line: 2-5/8" depth)

Item #: 237XT42


Add to Cart
Metra Female Quick Slides

Metra Female Quick Slides

An assortment of female quick slide connectors for connecting to speaker terminals

Item #: 120FQS10PK


Metra Crimp Tool and Connectors

Metra Crimp Tool and Connectors

Package contains crimp tool and over 150 pieces

Item #: 120CRIMPKT


Add to Cart
S&G Wire Cutter/Stripper Tool

S&G Wire Cutter/Stripper Tool

Cuts and strips 12- to 22-gauge wire

Item #: 18119100


Add to Cart
S&G Tool Aid 87615

S&G Tool Aid 87615

Window and Door Clip Removal Tool

Item #: 18187615


S&G Tool Aid 87650

S&G Tool Aid 87650

Door Trim and Panel Removal Tool

Item #: 18187650


Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6NGL


Add to Cart
Skewdriver Pro SPK4042

Skewdriver Pro SPK4042

Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)

Item #: 180SPK4042


Add to Cart
Spec Tools SQR-200a Squeeze Wrench

Spec Tools SQR-200a Squeeze Wrench

Narrow space ratchet kit with 18 sockets

Item #: 180SQR200A


Add to Cart
Bojo Trim Panel Tools

Bojo Trim Panel Tools

Set of 6 pry tools — helps remove interior and exterior trim and door panels

Item #: 126CR6LNGL


Add to Cart
Bass Blockers

Bass Blockers

Pairs (800 Hz cut-off)

Item #: 127BB800A2


Add to Cart