Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In

1978 Triumph TR7

Change vehicle | Remove vehicle

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Universal-Fit Audio for 1978 Triumph TR7

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

Better sound with your factory radio

Better sound with a factory radio

Love your factory look or can't replace the stereo? We got you covered.

Filters
Carpet ✕
Clear Filters
Reset Done
Brands
NVX (4)
Metra (1)

We are sorry, no available results!

Product Type
Carpet,
You Recently Chose:
Fuses (123)
Replacement antennas (62)
Subwoofer enclosures (213)
Subwoofers (1,137)
Amplifiers (927)
Subwoofers with a box (784)
Amplifiers with a wiring kit (439)
RCA cables and accessories (263)
Subwoofers with an amplifier and box (187)
Lighting accessories (175)
Subwoofer grilles (169)
Tweeters (Pro and special-fit) (147)
Speaker clamps and brackets (139)
Amplifier wiring kits (135)
Batteries (129)
Power and ground wire (128)
Speaker grilles (120)
Backup cameras (118)
Sound damping (104)
Subwoofers with an amplifier (101)
Handlebar and bar-mount speakers (97)
Alarm remote transmitters (96)
Line-out converters (88)
Fuse holders (81)
Speaker wire (73)
Ring terminals (63)
Distribution blocks (58)
Light bars (58)
Connectors (57)
Speaker enclosures (52)
Bass remotes (50)
Speaker spacers and rings (50)
Bluetooth adapters and transmitters (48)
Cables and interconnects (48)
Sound processors (39)
Trim rings and universal mounts (39)
Alarms (34)
Dash cameras (33)
Recone kits (32)
Stereo remote controls (32)
Rocker and Button switches (31)
Circuit breakers (30)
Primary/Remote wire (29)
Battery isolators and relays (27)
Audio test equipment (26)
Battery terminals (26)
Exterior lighting (26)
Installation accessories (25)
Trigger output and bypass modules (24)
Alarm accessories (23)
Antenna extension cables (23)
Split loom and heat shrink (22)
Diodes and resistors (21)
Capacitors (19)
Knockout panels (18)
Equalizers (16)
Noise filters (15)
Terminal cups (14)
Battery terminal posts (13)
Rearview monitor and mirrors (13)
Speaker baffles (13)
Adapters (12)
Radar and laser detectors (11)
Video adapters and switchers (11)
Speaker diaphragms (10)
Bass booster enhancers and processors (9)
Headlight bulbs (9)
Battery chargers (8)
Power inverters (8)
Tweeters (8)
2-way and CB radios (7)
Amplifier mounting hardware (7)
Panel and clip removal tools (7)
Voltmeters (7)
Blindspot cameras and sensors (6)
Gauge adapters (6)
Grommets and firewall bushings (6)
Headlights (6)
Sensors (6)
Box ports (5)
Carpet (5)
Knockout panel mount hardware (5)
Line drivers (5)
Passive crossovers (5)
Power supplies (5)
Steering wheel adapters (5)
Active Crossovers (4)
Bass Blockers (4)
License plates and frames (4)
Parking sensors (4)
Amplifier cooling fans (3)
Door panel clips (3)
Subwoofer (3)
Big 3 upgrade kits (2)
Door actuators and poppers (2)
In-motion video/navigation bypass (2)
Radar detector mounts (2)
Rearview mirror mounts (2)
Video amplifiers (2)
Alarms with remote start (1)
Backup batteries (1)
Cable management (1)
Connector sets (1)
FM modulators and transmitters (1)
Multi-camera and DVR systems (1)
Overhead monitors (1)
Remote mount media players (1)
Price Range
Condition
Availability
filter-icon Filters & Sort

NVX STBXC16

16 sq. ft. Black Subwoofer Box/Trunk Liner Carpet with Adhesive Backing

STBXC16 big
Go to item page Right Arrow Icon of Right Arrow

NVX STBXC16

16 sq. ft. Black Subwoofer Box/Trunk Liner Carpet with Adhesive Backing

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch
• Perfect for subwoofer boxes, car trunk liner or for use as a dash cover

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

13
List price $49.99
-40% $29.99

In stock

Add to Cart

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch
• Perfect for subwoofer boxes, car trunk liner or for use as a dash cover

NVX STBXC32

32 sq. ft. Black Subwoofer Box/Trunk Liner Carpet with Adhesive Backing

STBXC32 big
Go to item page Right Arrow Icon of Right Arrow

NVX STBXC32

32 sq. ft. Black Subwoofer Box/Trunk Liner Carpet with Adhesive Backing

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

5
List price $62.49
-20% $49.99

In stock

Add to Cart
Used from: $29.99

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch

NVX STBXC32 (Open Box, Great)

32 sq. ft. Black Subwoofer Box/Trunk Liner Carpet with Adhesive Backing

STBXC32 big
Go to item page Right Arrow Icon of Right Arrow

NVX STBXC32 (Open Box, Great)

32 sq. ft. Black Subwoofer Box/Trunk Liner Carpet with Adhesive Backing

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $62.49
-44% $34.99

In stock

Only 1 Left!

Add to Cart

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch

NVX STBXC32 (Open Box, Good)

32 sq. ft. Black Subwoofer Box/Trunk Liner Carpet with Adhesive Backing

STBXC32 big
Go to item page Right Arrow Icon of Right Arrow

NVX STBXC32 (Open Box, Good)

32 sq. ft. Black Subwoofer Box/Trunk Liner Carpet with Adhesive Backing

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch

shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $62.49
-52% $29.99

In stock

Only 1 Left!

Add to Cart

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch

Metra BC360

50 Yards of Charcoal Speaker Box Latex

BC360 big
Go to item page Right Arrow Icon of Right Arrow

Metra BC360

50 Yards of Charcoal Speaker Box Latex

• Speaker Box Latex
• Backed
• 48 Inches Wide
• Charcoal
• 50 Yards

shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $50.50 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $561.99
-10% $504.99

In stock.

Add to Cart

• Speaker Box Latex
• Backed
• 48 Inches Wide
• Charcoal
• 50 Yards

 
    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Universal-Fit Audio & Electronics in 1978 TR7

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1978 Triumph TR7?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your TR7.

    Save up to 10 different vehicles in your garage
    Vehicle
    Store     Delete

    2016 Dodge Viper

    1978 Triumph TR7

    1982 Dodge B150

    2019 Cadillac Escalade

    2024 Genesis G90

    1986 Ford EXP

    2005 Cadillac XLR

    2016 BMW 3 Series

    2005 Saab 9-2X

    1992 GMC C1500

    Vehicle
    Store     Delete

    2000 Harley Davidson FXST Softail Standard

    Vehicle
    Store     Delete

    2019 Can-Am Defender DPS HD5

    Add vehicle Clear all vehicles
    Where to find vehicle info
    Are you sure you want to clear your garage?
    This action cannot be undone. Confirm

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 1978 TR7
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    Identify your vehicle and submodel details
    • Owner's manual
    • Vehicle's insurance card
    • Vehicle registration
    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
    Car Info Side Door Icon
    Vehicle Registration Icon
    Vehicle Insurance Icon
    Back

    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo