2014-2018 GMC Sierra Crew Cab 1500/2500/3500 4x8 Nemesis Bass Package

2014-2018 GMC Sierra Crew Cab 4x8 Quad 8 Nemesis Bass Package

Upgrade your 2014-2018 GMC Sierra Crew Cab with a complete Nemesis Audio quad 8 bass package built for loud, controlled daily bass and vehicle-specific fitment. This page matches how customers search: 4x8, 4 8, 4/8, 4 8s, four 8s, and quad 8-inch GMC Sierra bass package.

Vehicle Fitment

• 2014-2018 GMC Sierra 1500 Crew Cab
• 2014-2018 GMC Sierra 2500 Crew Cab
• 2014-2018 GMC Sierra 3500 Crew Cab
• Confirm cab style, rear-seat layout, factory storage, and under-seat clearance before ordering

Package Includes

• Four Nemesis Audio 8-inch subwoofers
• Nemesis Audio FIERCE-5KD amplifier support
• Ported 4x8 vehicle-specific GMC Sierra Crew Cab subwoofer enclosure
• Amplifier wiring and line output converter support for factory-radio integration

Why It Works

• Complete Sierra truck bass package with subwoofers, enclosure, amplifier path, and wiring support
• Strong output from a quad 8 layout while keeping the install clean and truck-specific
• Good choice for Sierra Denali, AT4, 1500, 2500, and 3500 Crew Cab owners looking for a serious bass upgrade
• Available for shipping or Dallas-area installation through Super Car Audio

Professional installation is recommended. Final fitment should be confirmed before shipping if the truck has unusual seating, factory storage, or previous audio modifications.