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Massive Audio MC10II (Sold Individually)

800W Peak (400W RMS) 10" MC Series 8-ohm Pro-Audio Midrange Car Speaker

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800W Peak (400W RMS) 10" MC Series 8-ohm Pro-Audio Midrange Car Speaker

• 800 watts Peak Each, 400 watts RMS Each
• Kevlar-Enhanced Paper cone material
• Impedance: 8 ohm
• Sensitivity: 99.2 dB

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Install kits available for most vehicles

found car based on your search
Fits your GS300
List price $149.99
-20% $119.99

Available

Ships in 10-14 days

Alpine S2-S40C with Sound Damping

280W Peak (90W RMS) 4" Next-Generation S-Series 2-way Component Speaker System + NVX SDSK2 Sound Damping

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280W Peak (90W RMS) 4" Next-Generation S-Series 2-way Component Speaker System + NVX SDSK2 Sound Damping

• 140 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your GS300
48
List price $198.74
-25% $149.95

In stock

• 140 watts Peak Each, 45 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Kenwood KFC-1066S with Sound Damping

440W Peak (42W RMS) 4" Sport Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

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440W Peak (42W RMS) 4" Sport Series 2-way 4-ohm Coaxial Car Speakers + NVX SDBSK2 Premium Sound Damping

• 220 watts Peak Each, 21 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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found car based on your search
Fits your GS300
51
List price $98.74
-40% $59.49

In stock

• 220 watts Peak Each, 21 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Limited time!

Alpine S2-S40C

280W Peak (90W RMS) 4" S-Series Hi-Res 2-Way Component Car Speakers

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280W Peak (90W RMS) 4" S-Series Hi-Res 2-Way Component Car Speakers

• 140 watts Peak Each, 45 watts RMS Each
• Hi-Res Audio Certified
• 1" Cloth Dome Tweeters
• Adjustable tweeters with threaded removable housing
• Polypropylene, Glass Fiber and Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Free Speaker Accessory at Checkout!
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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your GS300
  • Lower Front Door
  • Rear Door
1
List price $180.00
-17% $149.95 /set

In stock

MTX TERMINATOR4

120W Peak (60W RMS) 4" Terminator Series 2-Way Coaxial 4-ohm Car Speakers

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120W Peak (60W RMS) 4" Terminator Series 2-Way Coaxial 4-ohm Car Speakers

• 60 watts Peak Each, 30 watts RMS Each
• Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88.1 dB

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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your GS300
  • Lower Front Door
  • Rear Door
List price $64.95
-15% $54.95 /pair

In stock

Only 2 Left!

Limited time!

Boss Elite BE423

450W Peak 4" Rage Series 3-Way Coaxial 4-ohm Car Speakers with Blue LED Light

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450W Peak 4" Rage Series 3-Way Coaxial 4-ohm Car Speakers with Blue LED Light

• 225 watts Peak
• 1/2" and 1.25" Piezo Dome Tweeters
• Polypropylene cone material
• Features integrated blue LED illumination
• Impedance: 4 ohm
• Sensitivity: 90 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your GS300
  • Lower Front Door
  • Rear Door
List price $66.99
-18% $54.99 /pair

Available

Ships in 10-14 days

DS18 PRO-ZXI10MBASS (Sold Individually)

1000W Peak (500W RMS) 10" ZXi Series 8-Ohm Midbass Car Loudspeaker

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1000W Peak (500W RMS) 10" ZXi Series 8-Ohm Midbass Car Loudspeaker

• 1000 watts Peak Each, 500 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 98 dB

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Install kits available for most vehicles

found car based on your search
Fits your GS300
$149.95

In stock.

• 1000 watts Peak Each, 500 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 98 dB

DS18 G4XI

240W Peak (80W RMS) 4" GEN-X Series 2 Way Coaxial 4-ohm Speakers

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240W Peak (80W RMS) 4" GEN-X Series 2 Way Coaxial 4-ohm Speakers

• 120 watts Peak Each, 40 watts RMS Each
• 1" Mylar Dome Tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your GS300
  • Lower Front Door
  • Rear Door
List price $55.99
-18% $45.95 /pair

In stock.

Limited time!

Massive Audio MX4

300W Peak (60W RMS) 4" MX Series 2-Way 4-ohm Coaxial Car Speakers

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300W Peak (60W RMS) 4" MX Series 2-Way 4-ohm Coaxial Car Speakers

• 150 watts Peak Each, 30 watts RMS Each
• 1/2" PEI (Polyetherimide) Dome tweeters
• Tweeters constructed with ferro fluid cooled voice coil
• Laminate-Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 91.5 dB

Free Speaker Accessory at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your GS300
  • Lower Front Door
  • Rear Door
1
List price $49.99
-20% $39.99 /pair

Available

Ships in 10-14 days

DS18 10XL1000MB-8 (Sold Individually)

1000W Peak (500W RMS) 10" XL Series Mid-Bass 8-ohm Loudspeaker

10XL1000MB-8 big
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1000W Peak (500W RMS) 10" XL Series Mid-Bass 8-ohm Loudspeaker

• 1000 watts Peak, 500 watts RMS
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 99.5 dB

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Install kits available for most vehicles

found car based on your search
Fits your GS300
List price $244.99
-17% $203.95

In stock.

DS18 10XL1000MB-4 (Sold Individually)

1000W Peak (500W RMS) 10" XL Series Mid-Bass 4-ohm Loudspeaker

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1000W Peak (500W RMS) 10" XL Series Mid-Bass 4-ohm Loudspeaker

• 1000 watts Peak, 500 watts RMS
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 99.5 dB

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VIP Product Get $20.40 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits your GS300
List price $244.99
-17% $203.95

Available

Ships in 10-14 days

DS18 PRO-CUPOLA2 (Sold Individually)

300W Peak (100W RMS) 4" Pro Audio Soft Dome Midrange 4-ohm Loudspeaker

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300W Peak (100W RMS) 4" Pro Audio Soft Dome Midrange 4-ohm Loudspeaker

• 300 watts Peak, 100 watts RMS
• Coated non-resonant soft dome material
• Ultra-high sound quality
• Perfect for studio monitors or Hi-Fi applications
• Impedance: 4 ohm
• Sensitivity: 95 dB

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VIP Product Get $10.00 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your GS300
  • Lower Front Door
  • Rear Door
List price $119.99
-17% $99.95

In stock.

AudioControl PNW-4

150W Peak (100W RMS) 4″ PNW Series 2 Way Coaxial 3-ohm Speakers

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150W Peak (100W RMS) 4″ PNW Series 2 Way Coaxial 3-ohm Speakers

• 75 watts Peak Each, 50 watts RMS Each
• Silk Dome Tweeters
• Rigid Poly Mica cone material
• Impedance: 3 ohm
• Sensitivity: 84.38 dB

1+ offers available
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VIP Product Get $16.90 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your GS300
  • Lower Front Door
  • Rear Door
1
List price $189.00
-11% $169.00 /pair

In stock

Continue to cart

Available Offers (2) for AudioControl PNW-4
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Flash Sale! Save at Checkout!
List price $189.00
-11% $169.00
$135.20 with coupon | Price details
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Deaf Bonce Apocalypse DPW-1030

1000W Peak (800W RMS) 10" Apocalypse Series 4-ohm Midwoofer Car Speakers

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1000W Peak (800W RMS) 10" Apocalypse Series 4-ohm Midwoofer Car Speakers

• 1000 watts Peak Each, 800 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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VIP Product Get $21.99 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits your GS300
$219.90

Available

Ships in 10-14 days

Limited time!

Kicker PS42 (40PS42)

200W Peak (100W RMS) 4” PS Series 2 Way Coaxial 2-ohm Powersports and Motorcycle Speakers

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200W Peak (100W RMS) 4” PS Series 2 Way Coaxial 2-ohm Powersports and Motorcycle Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Titanium Dome tweeters
• Protective speaker grilles included
• Polypropylene Material
• Impedance: 2 ohm
• Sensitivity: 85.8 dB
• Mounting Depth: 1-11/16"

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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your GS300
  • Lower Front Door
  • Rear Door
List price $149.99
Save $46.03
-31% $103.96 /pair

Available

Ships in 10-14 days

• 100 watts Peak Each, 50 watts RMS Each
• 3/4" Titanium Dome tweeters
• Protective speaker grilles included
• Polypropylene Material
• Impedance: 2 ohm
• Sensitivity: 85.8 dB
• Mounting Depth: 1-11/16"

Limited time!

Cerwin Vega CVMPCL10 (Sold Individually)

500W Peak (250W RMS) 10" Stroker Pro Series Full Range 4-ohm Speaker

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500W Peak (250W RMS) 10" Stroker Pro Series Full Range 4-ohm Speaker

• 500 watts Peak, 250 watts RMS
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 95.9 dB

Flash Sale! Save at Checkout!
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Install kits available for most vehicles

found car based on your search
Fits your GS300
1
List price $227.99
-17% $189.99

In stock

Used from: $209.99

DS18 PRO-X10M

600W Peak (300W RMS) 10" PRO-X Series 8-ohm Mid-Range Loudspeaker

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600W Peak (300W RMS) 10" PRO-X Series 8-ohm Mid-Range Loudspeaker

• 600 watts Peak Each, 300 watts RMS Each
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 96 dB

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VIP Product Get $9.00 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits your GS300
$89.95

In stock

Only 3 Left!

DS18 PRO-W10.2SNEO (Sold Individually)

800W Peak (400W RMS) 10" PRO Series Midwoofer 2-ohm Motorcycle and Powersports Loudspeaker

PRO-W10.2SNEO big
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800W Peak (400W RMS) 10" PRO Series Midwoofer 2-ohm Motorcycle and Powersports Loudspeaker

• 800 watts Peak, 400 watts RMS
• Water Resistance Paper cone material
• Impedance: 2 ohm
• Sensitivity: 91 dB

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VIP Product Get $21.60 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits your GS300
$215.95

In stock.

DS18 PRO-X4.4BMSL (Sold Individually)

200W Peak (100W RMS) 4" PRO-X Series 8-ohm Shallow-mount Mid-range Speaker

PRO-X4.4BMSL big
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200W Peak (100W RMS) 4" PRO-X Series 8-ohm Shallow-mount Mid-range Speaker

• 200 watts Peak Each, 100 watts RMS Each
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits multiple locations in your GS300
  • Lower Front Door
  • Rear Door
$39.95

In stock.

MTX RTX108 (Sold Individually)

500W Peak (250W RMS) 10" RoadThunder Extreme Series 2-way Coaxial Car Speakers

RTX108 big
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500W Peak (250W RMS) 10" RoadThunder Extreme Series 2-way Coaxial Car Speakers

• 500 watts Peak Each, 250 watts RMS Each
• Treated Paper cone material
• Impedance: 8 ohm
• Sensitivity: 94 dB

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VIP Product Get $11.00 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits your GS300
3
$109.95

Available

Ships in 10-14 days

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    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
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    FAQ for Speakers in 1999 GS300

    Q: Can I upgrade or change the Speakers in 1999 Lexus GS300?

    A: Yes this page includes all the best Speakers that work in your GS300.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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