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- The SPT-21GM GM truck speaker system consists of two pairs of speakers that are engineered to fit and sound great in 2007-2013 GM full size trucks.
- A pair of 2-way, 6 ½-inch component speakers are supplied for the front doors, and a pair of 6 ½-inch coaxial speakers are used for the rear.
- The speakers and tweeters fit into the truck’s factory locations and include mounting adapters to optimize their position and angle for the best possible sound reproduction.
- The SPT-21GM can also be purchased separately as an independent speaker system.