Peripherals 350W Dedicated Subwoofer Amplifier & Subwoofer Upgrade Options $299.00 – $899.00 - Toyota Subwoofer Add-On $399.00 – $698.00 - Toyota Front Speaker Upgrade $399.00 - Deadening: Bulk (58 sq ft) $399.00 - Deadening: Bulk (19.5 sq ft) $199.00 - Deadening: Speaker Kit $29.00 – $89.00 - Deadening: Speaker Kit (4 Doors + Hatch) $89.00 - Deadening: Speaker Kit (2 Doors) $29.00 - Don’t see your vehicle listed? Let us know the make/model of the vehicle