Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In
  1. Home
  2. Specials & Promotions
  3. Refurbished & Used

Refurbished & Used for your 1957 FL close

Filters

Your Vehicle

close
Exclamation Icon
Fitment data is not available for your 1957 FL
Universal-fit product options below.
Update vehicle | Remove vehicle | Vehicle store

Shop the Category

filter-icon Filters & Sort
Limited time!

Massive Audio M6 (Sold Individually) (Open Box, Great)

300W Peak (140W RMS) 6.5" M Series 8-ohm Midrange Car Speaker

M6-3 big
Go to item page Right Arrow Icon of Right Arrow

Massive Audio M6 (Sold Individually) (Open Box, Great)

300W Peak (140W RMS) 6.5" M Series 8-ohm Midrange Car Speaker

• 300 watts Peak Each, 140 watts RMS Each
• Laminate-Treated Paper cone material
• Impedance: 8 ohm
• Sensitivity: 96 dB

10% Off Open Box!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

Fitment unknown for your FL

List price $49.99
-44% $27.99
$25.19 with coupon | Price details

In stock

Only 1 Left!

Add to Cart
See all 5 special offers
Limited time!

NVX NSP65 - Open Box, Great

540W Peak (180W RMS) 6.5" N-Series 2-Way Coaxial Speakers with 20mm Silk Dome Tweeters

NSP65 big
Go to item page Right Arrow Icon of Right Arrow

NVX NSP65 - Open Box, Great

540W Peak (180W RMS) 6.5" N-Series 2-Way Coaxial Speakers with 20mm Silk Dome Tweeters

• 270 watts Peak Each, 90 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB
• Mounting Depth: 2.40"

10% Off Open Box!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

Fitment unknown for your FL

4
List price $83.99
-35% $54.99 /pair
$49.49 with coupon | Price details

In stock

Only 2 Left!

Add to Cart
See all 11 special offers

Polk Audio DB402 (DB 402) (Open Box, Great)

270W Peak (90W RMS) 4" DB+ Series 2-way 4-ohm Car & Marine Coaxial Speakers

DB402 big DISCONTINUED
Go to item page Right Arrow Icon of Right Arrow

Polk Audio DB402 (DB 402) (Open Box, Great)

270W Peak (90W RMS) 4" DB+ Series 2-way 4-ohm Car & Marine Coaxial Speakers

• 135 watts Peak Each, 45 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Fitment unknown for your FL

• 135 watts Peak Each, 45 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Prev 4 5 6 7 8

Items per page: 20 40 60

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

    1996 Ford Explorer

    1997 Lexus ES300

    2011 Audi TT

    1989 Jeep Comanche

    2021 Nissan Maxima

    2012 Dodge Journey

    2025 Audi Q3

    2004 Volvo S40

    2024 Ford Bronco

    2016 Ford Explorer

    Vehicle
    Store     Delete

    1957 Harley Davidson FL

    Vehicle
    Store     Delete

    2017 Can-Am Defender HD10

    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 1957 FL
    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.
    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