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American Bass SQ 6.5

320W Peak (160W RMS) 6.5" SQ Series 2 Way Full Range Coaxial 4-ohm Speakers

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320W Peak (160W RMS) 6.5" SQ Series 2 Way Full Range Coaxial 4-ohm Speakers

• 160 watts Peak Each, 80 watts RMS Each
• Swivel 3/4" Neodymium Dome tweeters
• Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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List price $92.12
-29% $65.78 /pair

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Earthquake Sound VTEK-62

1000W RMS 6.5" VTEK Series 2-Way Coaxial 4-ohm Car Speakers

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1000W RMS 6.5" VTEK Series 2-Way Coaxial 4-ohm Car Speakers

• 500 watts RMS Each
• 3/4" Silk Dome swiveling tweeters
• Glass Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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List price $179.00
-24% $135.99 /pair

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Infinity Primus 603CF (PR603CF)

360W Peak (120W RMS) 6.5" Primus Series 2 Way 3-ohm Component Speaker System

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360W Peak (120W RMS) 6.5" Primus Series 2 Way 3-ohm Component Speaker System

• 180 watts Peak Each, 60 watts RMS Each
• 3/4" Silk Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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List price $159.95
-19% $129.95 /set

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DS18 ZXI-44

300W Peak (100W RMS) 4" ZXI Series 2-way 4-ohm Coaxial Car Speakers

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300W Peak (100W RMS) 4" ZXI Series 2-way 4-ohm Coaxial Car Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Dome tweeters
• Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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$80.95 /pair

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JBL Club 64C (JBLSPKCB64C)

420W Peak (140W RMS) 6.5" Club Series 2 Way 3-ohm Component Speaker System

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420W Peak (140W RMS) 6.5" Club Series 2 Way 3-ohm Component Speaker System

• 210 watts Peak Each, 70 watts RMS Each
• Silk Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

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List price $229.95
-13% $199.95 /set

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Earthquake Sound VTEK-MC5

1000W RMS 5.25" VTEK Series 2-Way Component 4-ohm Car Speaker System

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1000W RMS 5.25" VTEK Series 2-Way Component 4-ohm Car Speaker System

• 500 watts RMS Each
• 1" Silk Dome Tweeters
• Electroplated Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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List price $249.00
-8% $229.99 /set

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Cerwin-Vega V465C

800W Peak (200W RMS) 6.5" Vega Series 2-Way 4-ohm Component Speaker System

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800W Peak (200W RMS) 6.5" Vega Series 2-Way 4-ohm Component Speaker System

• 400 watts Peak Each, 100 watts RMS Each
• 1" Titanium Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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List price $215.99
-17% $179.99 /set

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Diamond Audio DES65C

240W Peak (120W RMS) 6.5" DES Series 2-way Component Speaker System

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240W Peak (120W RMS) 6.5" DES Series 2-way Component Speaker System

• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome tweeters
• Composite Foam Core Carbon Fiber cone material
• Sensitivity: 87 dB

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$359.99 /set

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$359.99
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Infinity Kappa 63XF with Installation Accessories

510W Peak (170W RMS) 6.5" Kappa Series 2-Way Coaxial Speakers with Silk Dome Tweeters + 6.5" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

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510W Peak (170W RMS) 6.5" Kappa Series 2-Way Coaxial Speakers with Silk Dome Tweeters + 6.5" Speaker Baffles + Sound Damping, Roller and Panel Removal Kit

• 255 watts Peak Each, 85 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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List price $387.66
-37% $244.01

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• 255 watts Peak Each, 85 watts RMS Each
• Silk Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Limited time!

Diamond Audio DES365C

280W Peak (140W RMS) 6.5" Diamond Elite Series 3-Way 4-ohm Component Speaker System

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280W Peak (140W RMS) 6.5" Diamond Elite Series 3-Way 4-ohm Component Speaker System

• 140 watts Peak Each, 70 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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$549.99 /set

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DS18 PRO-CF6.4SL (Sold Individually)

500W Peak (250W RMS) 6.5” PRO Series Water-Resistant Motorcycle and Motorsports Mid-Bass Loudspeaker

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500W Peak (250W RMS) 6.5” PRO Series Water-Resistant Motorcycle and Motorsports Mid-Bass Loudspeaker

• Peak Each, RMS Each
• Water Resistant Carbon Fiber material
• Impedance: 4 ohm
• Sensitivity: 95 dB
Priced Per Each Speaker

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$83.95

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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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List price $119.99
-17% $99.95

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Infinity REF607CF (INFSPKRF607CFUS)

540W Peak (180W RMS) 6.5" Reference Series 2 Way 3-ohm Component Speaker System

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540W Peak (180W RMS) 6.5" Reference Series 2 Way 3-ohm Component Speaker System

• 270 watts Peak Each, 90 watts RMS Each
• 3/4" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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List price $249.95
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-30% $175.95 /set

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Used from: $149.56

JBL GTO629 (Open Box, Great)

360W Peak (120W RMS) 6.5" GTO Series 2 Way Full Range Coaxial 3-ohm Speakers

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360W Peak (120W RMS) 6.5" GTO Series 2 Way Full Range Coaxial 3-ohm Speakers

• 180 watts Peak Each, 60 watts RMS Each
• 1" Edge Driven Dome tweeters
• Carbon-injected cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

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List price $180.00
-58% $75.99 /pair

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DS18 6PRO600SE-8 (Sold Individually)

600W Peak (300W RMS) 6.5" Pro Audio Midrange 4-ohm Loudspeaker

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600W Peak (300W RMS) 6.5" Pro Audio Midrange 4-ohm Loudspeaker

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

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$99.95

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DS18 PRO-CF6.4

600W Peak (300W RMS) 6.5" PRO Series Midrange 4-ohm Motorcycle and Powersports Loudspeaker

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600W Peak (300W RMS) 6.5" PRO Series Midrange 4-ohm Motorcycle and Powersports Loudspeaker

• 600 watts Peak, 300 watts RMS
• Water Resistant Carbon Fiber
• Impedance: 4 ohm
• Sensitivity: 93 dB

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$149.95

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• 600 watts Peak, 300 watts RMS
• Water Resistant Carbon Fiber
• Impedance: 4 ohm
• Sensitivity: 93 dB

Cerwin-Vega H40

300W Peak (100W RMS) 4" Vega Series 2-Way Coaxial 4-ohm Speakers

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300W Peak (100W RMS) 4" Vega Series 2-Way Coaxial 4-ohm Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome Tweeters
• UV-Treated Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

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List price $95.99
-17% $79.99 /pair

Available

Ships in 10-14 days

Earthquake Sound EQ650NEO (Sold Individually)

400W Peak (200W RMS) 6.5" EQ NEO Series Pro Audio Midrange 8-ohm Car and PA Speaker

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400W Peak (200W RMS) 6.5" EQ NEO Series Pro Audio Midrange 8-ohm Car and PA Speaker

• 400 watts Peak, 200 watts RMS
• Non-Pressed Paper cone material
• Impedance: 8 ohm
• Sensitivity: 95 dB

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$175.00

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Kicker CSC65 (46CSC654) (Open Box, Great)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

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600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

• 300 watts Peak Each, 100 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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List price $119.99
-42% $69.99 /pair

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DS18 PRO-FR6NEORGB (Sold Individually)

450W Peak (225W RMS) 6.5" 2-Way Pro Full Range 4-ohm Speaker with RGB LED Bullet

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450W Peak (225W RMS) 6.5" 2-Way Pro Full Range 4-ohm Speaker with RGB LED Bullet

• 450 watts Peak, 225 watts RMS
• Translucid ABS Bullet Tweeters
• Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

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List price $208.99
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Ships in 10-14 days

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    FAQ for Speakers in 2006 Sierra Denali

    Q: Can I upgrade or change the Speakers in 2006 GMC Sierra Denali?

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

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

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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.