Get it By Christmas! Order by 12/17
$30 Off Over $300* Code: DEC30
Free Shipping Over $75*
  • Make sure it fits

    Please select your vehicle to ensure that this product fits.

Select your vehicle

Alpine SPT-31GM 3-Way Direct Fit Restyle Speaker System by Alpine

Part no: ALP-SPT-31GM


We're sorry! This product is out of stock. Need help finding a similar product?
Give us a call!! 1-877-553-5337 or Chat with one of our Jeep Experts.

$999.95 + free Shipping
Price match guarantee

We will have it in stock again soon

Please Verify Fitment

This product fits only specific vehicles. Select your vehicle to ensure it fits.

Product Details

* Not For Sale Outside the United States

Important Notes:

  • Sold as a kit
  • ONLY fits double cab and crew cab models
  • NOT compatible with the Bose factory sound system


  • 2014-2017 Chevrolet Silverado 1500
  • 2014-2017 GMC Sierra 1500


The Alpine SPT-31GM 3-Way Direct Fit Restyle Speaker System upgrades your truck's sound system from a 2-way to a 3-way system. It consists of 8" woofers for the front doors, 6.5" coaxial speakers for the rear doors, and 3" midrange speakers with 1" silk dome tweeters installed in the dash. The unique tweeter housings are optimized for the best sound imaging and clarity. These speakers fit into the factory locations and use the factory connectors. They are backed by Alpine's one-year warranty.

Product Details:

  • Direct fit speaker package
  • 240W peak, 80W RPM system
  • 8" woofers for front doors
  • 6.5" coaxial rear door speakers
  • 3" midrange speakers
  • 1" silk dome tweeters
  • Precision-crafted tweeter housings optimized for sound quality
  • Includes all necessary wiring and hardware
  • Backed by Alpine's one-year warranty

Parts Included:

  • (2) 1" Tweeter Speakers
  • (2) 3" Midrange Speakers
  • (2) 8" Woofer Speakers
  • (2) 6.5" Coaxial Speakers
  • (2) Tweeter Pod Assemblies
  • (2) Midrange Speaker Adapters
  • (2) Rear Speaker Adapters
  • (2) Woofer Speaker Adapters
  • (2) Woofer Crossovers
  • (2) Tweeter and Midrange Crossovers
  • (6) Harness Adapters
  • (2) Foam Gaskets
  • Hardware

Years Covered:

2014, 2015, 2016 and 2017

For California residents: Proposition 65 Warning

Vehicle Fitment

2014-2018ChevroletSilverado 1500
2014-2018GMCSierra 1500

Additional Information

SKU AliasesSPT-31GM

Let's Chat