Garage
Shop

Motorcycle Installation and Accessories for your 1988 K1

Your Vehicle


Universal fit Icon
Explore universal-fit product options for your 1988 K1
Vehicle-specific solutions are not available in this category.

Update vehicle | Remove vehicle | Vehicle store

Shop by Category


Products in these categories contain items that carry a guarantee to fit your BMW K1 (change vehicle)

Additional Categories


You can shop these categories, but we cannot guarantee fit and/or we do not have products that fit your vehicle.

Top sellers

Loading...
filter-icon Filters & Sort
Limited time!

Belva BBSW167

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

BBSW167 big
Go to item page Right Arrow Icon of Right Arrow

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

• 7 Meters
• 16 Gauge Speaker Wire
• High Strand Count for Maximum Flexibility
• 23 Foot Length

Prime Time! Save 25% at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

20
List price $24.99
-48% $12.99

In stock

• 7 Meters
• 16 Gauge Speaker Wire
• High Strand Count for Maximum Flexibility
• 23 Foot Length

Limited time!

NVX XDSP28

8-Channel X-Series 15 Band Parametric EQ Digital Signal Processor (DSP) with LCD Display, Built-in Bluetooth and Remote Level Controller

XDSP28 big
Go to item page Right Arrow Icon of Right Arrow

8-Channel X-Series 15 Band Parametric EQ Digital Signal Processor (DSP) with LCD Display, Built-in Bluetooth and Remote Level Controller

• 15 Band Parametric EQ
• 8-Channel RCA Outputs
• Provides up to 2 Volts of output
• Fully adjustable High and Low-pass filters
• Time alignment in 0.02 ms increments

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

3
List price $131.99
-17% $109.99

In stock

Used from: $76.99

• 15 Band Parametric EQ
• 8-Channel RCA Outputs
• Provides up to 2 Volts of output
• Fully adjustable High and Low-pass filters
• Time alignment in 0.02 ms increments

JBL Cruise Harley-Davidson Mounting Bolt Kit (PWSACCCRUISEHD)

Harley Davidson Bolt Kit for JBL Cruise Handlebar Speaker Pods

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

Harley Davidson Bolt Kit for JBL Cruise Handlebar Speaker Pods

• Mounting hardware for JBL Cruise Handlebar Speakers
• Designed for 1982-up Harley-Davidson motorcycles

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 $29.95
-33% $19.95

In stock

Only 2 Left!

• Mounting hardware for JBL Cruise Handlebar Speakers
• Designed for 1982-up Harley-Davidson motorcycles

Belva BBSW127

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

BBSW127 big
Go to item page Right Arrow Icon of Right Arrow

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

• 7 Meters
• 12 Gauge Speaker Wire
• High Strand Count for Maximum Flexibility
• 23 Foot Length

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

43
List price $14.99
-53% $6.99

In stock

• 7 Meters
• 12 Gauge Speaker Wire
• High Strand Count for Maximum Flexibility
• 23 Foot Length

AudioControl DM-810

10-Channel Matrix Digital Sound Processor with AccuBASS

DM-810 big
Go to item page Right Arrow Icon of Right Arrow

10-Channel Matrix Digital Sound Processor with AccuBASS

• Premium matrix digital sound processor
• 8-Channel preamp input and 10-Channel preamp output
• 30-Band equalizer for adjusting gain, delay, and polarity
• High-pass, low-pass and band-pass crossovers
• Features GTO signal sensing, MILC clip detection, and AccuBASS
• Also features signal summing and signal delay

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

VIP Product Get $82.90 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

8
List price $1109.00
-25% $829.00

In stock

Used from: $663.20

• Premium matrix digital sound processor
• 8-Channel preamp input and 10-Channel preamp output
• 30-Band equalizer for adjusting gain, delay, and polarity
• High-pass, low-pass and band-pass crossovers
• Features GTO signal sensing, MILC clip detection, and AccuBASS
• Also features signal summing and signal delay

Limited time!

NVX XWS1625

25 ft 16-Gauge EnvyFlex 100% Oxygen Free Copper Speaker Wire (Blue/Gray)

XWS1625 big
Go to item page Right Arrow Icon of Right Arrow

25 ft 16-Gauge EnvyFlex 100% Oxygen Free Copper Speaker Wire (Blue/Gray)

• True Spec 16 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Twisted-pair technology eliminates noise

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

57
List price $29.99
-50% $14.99

In stock

• True Spec 16 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Twisted-pair technology eliminates noise

Stinger SGW991

9 Conductor Speedwire 100ft Roll

SGW991 big
Go to item page Right Arrow Icon of Right Arrow

9 Conductor Speedwire 100ft Roll

• 9 Conductor 18 Gauge Speaker Wire
• Nine Cables In One
• Flexible Jacketing • Ideal For 4-Channel Amplifiers
• Easy Installation

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 $199.00
-56% $88.00

In stock

• 9 Conductor 18 Gauge Speaker Wire
• Nine Cables In One
• Flexible Jacketing • Ideal For 4-Channel Amplifiers
• Easy Installation

Limited time!

NVX XWS1650

50 ft 16-Gauge EnvyFlex 100% Oxygen Free Copper (OFC) Speaker Wire (Blue/Gray)

XWS1650 big
Go to item page Right Arrow Icon of Right Arrow

50 ft 16-Gauge EnvyFlex 100% Oxygen Free Copper (OFC) Speaker Wire (Blue/Gray)

• True Spec 16 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Twisted-pair technology eliminates noise

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

37
List price $39.99
-25% $29.99

In stock

• True Spec 16 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Twisted-pair technology eliminates noise

Stinger SGW9920

20 ft. 18 Gauge 9 Conductor Speed Speaker Wire

SGW9920 big
Go to item page Right Arrow Icon of Right Arrow

20 ft. 18 Gauge 9 Conductor Speed Speaker Wire

• 20 ft. 18 Gauge 9 Conductor Speed Speaker Wire
• Great for a 4-channel amplifier setup
• EIA standard easy color-coded copper wires
• Easy and fast installations
• Color: Blue

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

1
List price $69.00
-41% $41.00

In stock

• 20 ft. 18 Gauge 9 Conductor Speed Speaker Wire
• Great for a 4-channel amplifier setup
• EIA standard easy color-coded copper wires
• Easy and fast installations
• Color: Blue

NVX XWS1250

50 ft 12-Gauge EnvyFlex 100% Oxygen Free Copper Speaker Wire (Blue/Gray)

XWS1250 big
Go to item page Right Arrow Icon of Right Arrow

50 ft 12-Gauge EnvyFlex 100% Oxygen Free Copper Speaker Wire (Blue/Gray)

• True Spec 12 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Translucent EnvyFlex flexible multi-strand construction

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

36
List price $94.99
-47% $49.99

In stock

Continue to cart

Available Offers (2) for NVX XWS1250
Offer image
Prime Time! Save 10% at Checkout!
List price $94.99
-47% $49.99
$44.99 with coupon | Price details
2026-06-28 23:59:00
Purchase $400 or More of NVX and Save 15%!
2026-07-27 11:08:20

• True Spec 12 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Translucent EnvyFlex flexible multi-strand construction

Rockford Fosgate DSR-1

8-Channel Digital Signal Processor with Integrated iDataLink Maestro Module

DSR1 big
Go to item page Right Arrow Icon of Right Arrow

8-Channel Digital Signal Processor with Integrated iDataLink Maestro Module

• Digital Signal Processing with Integrated Maestro CAN Interface
• Four channel high level inputs with signal sense turn on
• 18 Pin Analog Input and 16 Pin Analog Output Harness
• Interactive Tuning Interface Controlled via Android/iOS APP

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

VIP Product Get $42.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

$419.99

In stock

• Digital Signal Processing with Integrated Maestro CAN Interface
• Four channel high level inputs with signal sense turn on
• 18 Pin Analog Input and 16 Pin Analog Output Harness
• Interactive Tuning Interface Controlled via Android/iOS APP

JL Audio FiX-86

6-Channel OEM Integration Digital Sound Processor with Automatic Time Correction

FiX-86 big
Go to item page Right Arrow Icon of Right Arrow

6-Channel OEM Integration Digital Sound Processor with Automatic Time Correction

• OEM integration digital signal processor
• 24-bit DSP processor and quad 1/3 octave equalizers
• 8-input and 6-output channels
• Access four user-adjustable 10-band graphic equalizers
• 30-second single button calibration

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

VIP Product Get $53.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

14
$529.99

In stock

• OEM integration digital signal processor
• 24-bit DSP processor and quad 1/3 octave equalizers
• 8-input and 6-output channels
• Access four user-adjustable 10-band graphic equalizers
• 30-second single button calibration

JL Audio TwK-88

8-Channel Digital Signal Processor with Digital Remote Controller

TwK-88 big
Go to item page Right Arrow Icon of Right Arrow

8-Channel Digital Signal Processor with Digital Remote Controller

• 8-Channel digital signal processo
• 80 total bands of equalization
• TüN software offers quick input/output setup
• 8 RCA inputs or 1 optical input
• Includes DRC-200 digital remote control

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

VIP Product Get $58.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

10
$579.99

In stock

• 8-Channel digital signal processo
• 80 total bands of equalization
• TüN software offers quick input/output setup
• 8 RCA inputs or 1 optical input
• Includes DRC-200 digital remote control

Hertz S8 DSP

8-Channel Digital Sound Processor with Automatic Time Correction, Digital Equalizer, and High-Resolution Audio

S8 DSP big
Go to item page Right Arrow Icon of Right Arrow

8-Channel Digital Sound Processor with Automatic Time Correction, Digital Equalizer, and High-Resolution Audio

• 8-Channel Digital Sound Processor
• 7-Band parametric equalizer
• Speaker level (high-level) inputs
• Bluetooth for for added control
• High-resolution audio
• Configurable via S8 DSP application/software

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

VIP Product Get $42.00 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $455.00
-8% $419.99

Available

Ships in 10-14 days

• 8-Channel Digital Sound Processor
• 7-Band parametric equalizer
• Speaker level (high-level) inputs
• Bluetooth for for added control
• High-resolution audio
• Configurable via S8 DSP application/software

PRV Audio DSP 2.8X TEAM

8-Channel Digital Sound Processor

DSP 2.8X TEAM big
Go to item page Right Arrow Icon of Right Arrow

8-Channel Digital Sound Processor

• 8-Channel Digital Signal Processor
• Designed to integrate with aftermarket or factory OEM systems
• Integrated LCD display and intuitive interface
• Includes 2 audio inputs and 8 independent outputs
• 15-graphic equalizer with separate parametric equalizers

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 $137.39
-20% $109.91

In stock

• 8-Channel Digital Signal Processor
• Designed to integrate with aftermarket or factory OEM systems
• Integrated LCD display and intuitive interface
• Includes 2 audio inputs and 8 independent outputs
• 15-graphic equalizer with separate parametric equalizers

Limited time!

Stinger SHW516B500

16 GA Speaker Wire 500ft. Matte Blue

SHW516B500 big
Go to item page Right Arrow Icon of Right Arrow

16 GA Speaker Wire 500ft. Matte Blue

• 500 FT/152.4 m Roll
• 16 Gauge
• Matte Blue wire
• Dual Conductor

Flash Sale! Save at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $22.90 in rewards to spend later

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $499.00
-54% $228.99

In stock

• 500 FT/152.4 m Roll
• 16 Gauge
• Matte Blue wire
• Dual Conductor

JL Audio XC-BCSC12-25 Speaker Wire

25 ft. 12 Gauge (AWG) Speaker Cable (XCBCSC1225)

XC-BCSC12-25 big
Go to item page Right Arrow Icon of Right Arrow

25 ft. 12 Gauge (AWG) Speaker Cable (XCBCSC1225)

• 25 ft. 12 Gauge Premium Series Speaker Cable
• Multi-speaker cable for long runs up to 4 Channels
• Ninth conductor can be used for remote turn-on connection
• OFC Copper for flexibility and conductivity

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

12
$69.99

In stock

• 25 ft. 12 Gauge Premium Series Speaker Cable
• Multi-speaker cable for long runs up to 4 Channels
• Ninth conductor can be used for remote turn-on connection
• OFC Copper for flexibility and conductivity

Limited time!

NVX XWS1675

75 ft 16-Gauge EnvyFlex 100% Oxygen Free Copper (OFC) Speaker Wire (Blue/Gray)

XWS1675 big
Go to item page Right Arrow Icon of Right Arrow

75 ft 16-Gauge EnvyFlex 100% Oxygen Free Copper (OFC) Speaker Wire (Blue/Gray)

• True Spec 16 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Twisted-pair technology eliminates noise

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

22
List price $44.99
-22% $34.99

In stock

• True Spec 16 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Twisted-pair technology eliminates noise

Precision Power HD14.FTD

Tweeter Diaphragm Replacement for HD14.FHT Tweeters (1 Piece)

HD14.FTD big
Go to item page Right Arrow Icon of Right Arrow

Tweeter Diaphragm Replacement for HD14.FHT Tweeters (1 Piece)

• Replacement tweeter diaphragm for premium gauge tweeters
• Specifically designed for HD14.FTD tweeters
• Direct replacement, easy installation
• Includes one (1) replacement tweeter diaphragm

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $24.99
-20% $19.99

In stock

• Replacement tweeter diaphragm for premium gauge tweeters
• Specifically designed for HD14.FTD tweeters
• Direct replacement, easy installation
• Includes one (1) replacement tweeter diaphragm

Limited time!

NVX XWS1275

75 ft 12-Gauge EnvyFlex 100% Oxygen Free Copper Speaker Wire (Blue/Gray)

XWS1275 big
Go to item page Right Arrow Icon of Right Arrow

75 ft 12-Gauge EnvyFlex 100% Oxygen Free Copper Speaker Wire (Blue/Gray)

• True Spec 12 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Translucent EnvyFlex flexible multi-strand construction

Purchase $400 or More of NVX and Save 15%!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

14
List price $124.99
-52% $59.99

In stock

• True Spec 12 gauge EnvyFlex Speaker Wire
• Silver-tinned OFC (100% Oxygen-Free Copper) material
• Color: Blue and Gray
• Translucent EnvyFlex flexible multi-strand construction

Items per page: 20

    Clear all

    Additional Related Categories in Motorcycle Installation and Accessories


    You can shop these categories, but we cannot guarantee fit and/or we do not have products that fit your vehicle.
    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

    1978 Buick Skyhawk

    1973 Ford Custom 500

    1990 Dodge Mini Ram

    1981 Ford Thunderbird

    1981 Audi 5000

    1996 Eagle Talon

    1992 GMC K1500

    1993 Eagle Talon

    2003 Ford F-150

    2016 Dodge Dart

    Vehicle
    Store
    Delete

    1988 BMW K1

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

    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.