The Core Lower Door Speaker Panels are the entry point into our Squarebody door speaker system. Designed for builders who want a clean, bolt-on solution without lighting, wiring, or extra complexity.

This option keeps things simple while still improving speaker placement and sound quality where it matters most.

Is This the Right Option for You?

This is for you if:

• You want a non-lighted door panel
• You’re comfortable wiring your own speakers
• You want the most affordable version
• You prefer a DIY-friendly setup

This is NOT for you if:

• You want built-in lighting
• You want speaker wiring included
• You want a more finished, plug-and-play setup

If you want lighting and wiring included, check out our Builder Plus Lower Door Speaker Panels.

What’s Included

• One complete panel set (driver & passenger side)
• Raw black PETG printed lower door panels
• Raw aluminum backing plates
• Pre-cut acoustic foam (not installed)
• Your choice of available speaker grille styles
• All required mounting hardware
• Panels arrive assembled and ready to install

What’s Not Included (By Design)

• No lighting
• No speaker wiring
• No sound deadener
• No speakers

Available Options at Checkout

Plastic Panel Color Finish (Optional)

• Raw Black (Standard)
• Interior Color Match (+$80)

Applies to plastic portions only. Aluminum remains raw.
Color matching uses factory-style dyes and will be very close, but exact matches cannot be guaranteed due to interior age and fading.

Speaker Grille Style

• Standard grille designs (included)
• Custom grille design (+$125)

All standard grille designs are included at no extra cost. Custom grilles are made to order.

Speaker Options

• No speakers (DIY install)
• Soundqubed HDS Series 6.5" Coaxial 2-way Speakers (+$80.00) 
• SHCA - C653 6.5" 3-way Coaxial Speakers (+$135.00)
• DC Audio Pro Coaxial CX6.5 Speakers (+$300.00)

Speaker Fitment Details

• Designed for 6.5" speakers
• Speaker cutout diameter: 5.65"
• Maximum mounting depth: 2.9"

Speakers are covered by the speaker manufacturer’s warranty only.

Warranty & Fitment

• Fitment guarantee — if something isn’t right, we’ll help make it right

Bonus Feature Included

Every Core panel purchase includes free lifetime Basic access to our private Skool community — built exclusively for Squarebody owners.

• Verified Squarebody owners only
• Community-based install and fitment help
• Build discussions, tips, and shared knowledge
• Automatic entry into community-only giveaways
• Early updates on future products and releases

No subscription. No ongoing fees.

Vehicle Fitment

Fits 1973–1991 Squarebody Chevy & GMC platforms including pickups, K5 Blazer, Jimmy, and Suburban.

Lead Time & Shipping

• Built in small batches
• Current estimated lead time: 60 days
• Shipping calculated at checkout

Want More Features?

If you want lighting, wiring, sound deadener, extended warranty coverage, or premium finishes, check out our upgraded options:

• Builder Plus Lower Door Speaker Panels
• Premium Lower Door Speaker Panels

Designed for real Squarebody builds by Blazin' Biddles Offroad.