Here at Extreme Audio in Midlothian and Mechanicsville, we are proud to be dealers for Alpine’s Restyle Program with vehicle-specific solutions for some of the most popular vehicles on the market today. If you own a 2007–2014 GM truck or SUV, we have the Alpine SPT-21GM Restyle replacement speaker system to provide you with a high-quality drop-in system designed just for your vehicle by the experts from Alpine.
Alpine SPT-21GM Engineered Just for You
Imagine hiring an audio engineer to custom-design the perfect speakers to fit in your vehicle. That is what the experts at Alpine have done for a variety of vehicles, allowing you to drop an upgraded system into your factory locations for an instant upgrade. You can upgrade your source unit and add extra amplifiers if you want, but these systems will take your existing factory radio to new heights of sound quality with no other upgrades needed.
From Cheap Factory Paper Cone Speakers to High-end Components

GM installs an average-quality paper cone speaker that doesn’t even begin to take advantage of the available power from your factory deck. With the Alpine SPT-21GM, the front gets an upgrade to a high-quality component set in the front with door-mounted 6 ½-inch woofers and 1-inch tweeters with crossovers. Both come with custom mounts that easily drop right into your factory locations – with no modification needed. The tweeter housings are angled for optimum imaging and clarity. The rear speakers are 6 ½” co-axials that also come with a custom mounting bracket.
Good Power Handling and Efficiency
If you choose to keep your factory source unit and power, these speakers are efficient enough to provide a great upgrade in sound quality and detail. They will handle up to 240 watts peak and 80 watts RMS whether you should choose to upgrade your power now or at a later date.
Our clients love how these speakers sound in their GM trucks. Come on by Extreme Audio and let our experts show you what these, and other, Alpine Restyle products can do for your vehicle, or click HERE for more information.
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